caojingxinAUTHOR & INDEPENDENT OPERATOR

caojingxin

Independent operator of CurrencyFlow, responsible for currency tools, data explanations, travel-money and exchange-rate guides.

WHY CURRENCYFLOW

Why this site is maintained

CurrencyFlow brings dated reference rates, historical data, fee differences, and practical travel or cross-border payment context into one place. The goal is to make clear that a reference rate and a real customer transaction cost are not the same thing.

EDITORIAL PROCESS

How content is prepared

Data pages use public reference sources and reproducible calculations. Editorial guides separately explain use cases, limitations, and cost factors. Rate dates are preserved, and errors are handled through the editorial and corrections process.

INDEPENDENCE

Independent operation

The site is independently operated. Reference rates are not presented as guaranteed bank or trading quotes, and the site does not provide investment, trading, or timing advice. If advertising is enabled, it is kept distinct from editorial content.

ARTICLES

Published work

Travel money

How to estimate a Europe travel budget with EUR to CNY rates

Use a dated EUR/CNY reference rate for accommodation, transport, meals and shopping, then include card and cash costs.

2026-09-15
Fees and spreads

How card fees affect USD to TWD conversion

A practical breakdown of reference rates, card-network conversion, foreign transaction fees and posting time for USD/TWD spending.

2026-09-11
Exchange-rate basics

How to read TWD to CNY: direction, amount tables and fees

Understand TWD/CNY versus CNY/TWD, common amounts, provider dates and real conversion costs.

2026-09-08
Currency reports

EUR to CNY 2026-08 monthly rate report: high, low, average and change

A data-based summary of 31 valid EUR/CNY observations in 2026-08, including start, end, high, low and average.

2026-09-04
Travel money

Renminbi or Hong Kong dollars in Hong Kong? Conversion and payment guide

Understand HKD/CNY direction, merchant settlement currency, card payments and cash preparation without confusing reference and executable rates.

2026-09-04
Currency reports

JPY to CNY 2026-08 monthly rate report: high, low, average and change

A data-based summary of 31 valid JPY/CNY observations in 2026-08, including start, end, high, low and average.

2026-09-03
Currency reports

USD to CNY 2026-08 monthly rate report: high, low, average and change

A data-based summary of 31 valid USD/CNY observations in 2026-08, including start, end, high, low and average.

2026-09-02
Travel money

How to get Japanese yen for a trip: cash, cards and ATM guide

Use CNY/JPY reference data for a Japan budget and understand cash, cards, ATMs and dynamic currency conversion.

2026-09-01
Fees and spreads

Why USD to CNY reference rates differ from bank quotes

How spreads, fixed fees, card conversion costs and posting time create a difference between USD/CNY reference data and provider quotes.

2026-08-28
Cross-border business

Cross-border payment checklist: rates, fees, recipient details and timing

A pre-payment checklist covering currency, recipient details, rate, fee allocation, delivery timing, refund terms and evidence.

2026-08-27
Cross-border business

How to convert a foreign-currency invoice and keep an auditable record

A practical record-keeping guide for foreign-currency invoices, including amounts, dates, rate sources, fees and review evidence.

2026-08-25
Accounting and historical rates

Which exchange-rate date should be used for accounting?

Explains transaction, payment, posting, settlement and period-end dates and how to build a reproducible foreign-currency accounting workflow.

2026-08-22
Accounting and historical rates

How to find and use historical exchange rates correctly

Explains requested versus actual data dates, currency direction, reciprocal calculations and record keeping for reimbursement, analysis and general accounting reference.

2026-08-20
Currency reports

EUR to USD: 12-month reference-rate data study

A 12-month EUR/USD data study using 365 available dated observations, with range, average, direction counts and monthly statistics.

2026-08-20
Currency reports

USD to JPY: 12-month reference-rate data study

A 12-month USD/JPY data study using 365 available dated observations, with range, average, direction counts and monthly statistics.

2026-08-20
Currency reports

USD to CNY: 12-month reference-rate data study

A 12-month USD/CNY data study using 365 available dated observations, with range, average, direction counts and monthly statistics.

2026-08-20
Travel money

Japan travel money plan: cash, cards and ATM withdrawals

A practical way to plan yen cash, card spending and ATM withdrawals without treating any one payment method as universally cheapest.

2026-08-20
Travel money

Hong Kong spending: HKD, renminbi or card?

How to choose between Hong Kong dollars, renminbi cash and card payments while keeping exchange-rate spread and merchant conversion visible.

2026-08-20
Travel money

Singapore travel payments: cash, cards and mobile wallets

A practical payment plan for Singapore that separates local acceptance from the foreign-exchange cost charged by your own card or wallet provider.

2026-08-20
Travel money

Thailand ATM withdrawals: fees, exchange rates and DCC

A step-by-step way to calculate the real cost of a Thai ATM withdrawal, including local operator fees, issuer charges and optional currency conversion.

2026-08-20
Fees and spreads

Which date does a card use for a foreign-currency purchase?

Why purchase date, processing date and statement date can differ, and how to reconcile a card transaction with a public reference rate without assuming an exact match.

2026-08-20
Exchange-rate basics

Cash exchange rate vs transfer rate: why the quotes differ

A practical explanation of why physical cash conversion and account-to-account foreign-currency transfers can have different pricing even for the same currency pair.

2026-08-20
Exchange-rate basics

Why exchange-rate data can look unchanged on weekends

Why many reference-rate datasets publish on business days, how weekends and holidays affect charts, and how to record a weekend transaction date accurately.

2026-08-20
Cross-border business

Why did the recipient get less? A cross-border transfer checklist

A structured way to investigate the gap between the amount sent and the amount received by separating exchange-rate spread, fixed fees, intermediary charges and recipient-bank costs.

2026-08-20
Travel money

Cash or card when travelling: how to build a practical mix

A practical framework for combining cash, cards and mobile payments based on acceptance, cost, safety, budgeting and backup options.

2026-08-18
Travel money

Using ATMs abroad: fees, DCC and a safety checklist

A practical guide to ATM operator charges, issuer fees, dynamic currency conversion, withdrawal limits and basic safety when travelling.

2026-08-15
Fees and spreads

How to compare currency exchange and transfer providers

A reusable checklist for comparing providers by final amount, rate spread, fixed charges, speed, refund terms and transparency.

2026-08-13
Fees and spreads

What is dynamic currency conversion (DCC) and which currency should you choose?

Explains the home-currency option shown at overseas terminals and ATMs, the difference between DCC and local-currency billing, and how to decide.

2026-08-11
Currency reports

EUR to CNY 2026-07 monthly rate report: high, low, average and change

A data-based summary of 31 valid EUR/CNY observations in 2026-07, including start, end, high, low and average.

2026-08-08
Fees and spreads

How to calculate exchange-rate spreads and fees

A step-by-step guide to reference rates, rate markups, fixed charges and percentage fees, focused on comparing the final amount received.

2026-08-08
Currency reports

JPY to CNY 2026-07 monthly rate report: high, low, average and change

A data-based summary of 31 valid JPY/CNY observations in 2026-07, including start, end, high, low and average.

2026-08-07
Currency reports

USD to CNY 2026-07 monthly rate report: high, low, average and change

A data-based summary of 31 valid USD/CNY observations in 2026-07, including start, end, high, low and average.

2026-08-06
Exchange-rate basics

Why do bank exchange rates differ from online reference rates?

Explains why bank quotes can differ from online reference rates, including spreads, channels, settlement timing, card conversion and cash-versus-account distinctions.

2026-08-06
Exchange-rate basics

What is the mid-market exchange rate and why is it useful?

An accessible guide to the mid-market rate, reference rates and customer exchange rates, with practical uses for travel, transfers, accounting and price comparison.

2026-08-04
Exchange-rate basics

How to read an exchange-rate chart: range, highs, lows and percentage change

Explains pair direction, time range, highs, lows, averages and percentage change so users can read currency charts without treating them as trading advice.

2026-08-03
Exchange-rate basics

What Is an Exchange Rate?

A practical explanation of currency direction, dates, providers and why two quotes can differ.

2026-07-31
Fees and spreads

Reference Rate vs Bank Rate

Learn how provider spreads, fixed fees and processing time change the customer result.

2026-07-31
Travel money

Travel Money Cost Checklist

A step-by-step checklist for comparing cards, cash, ATMs and dynamic currency conversion.

2026-07-31
Accounting and historical rates

Historical Exchange Rates for Accounting Records

How to record the requested date, actual publication date, provider and calculation method.

2026-07-31