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Sixty-seven open-weight releases from Chinese labs, each with a date I could trace to a primary source — plus the eleven candidates I dropped, and why.

Five kinds of error, three ways one accuracy figure misleads, and what a routing test on 3,894 public complaints actually returned.

An eval set has a purpose, a scoring rule, a calibration record and an expiry date. Where samples come from, what counts as correct, what retires it.

I priced three concrete jobs on seven model APIs using each vendor's own pricing page, and wrote down every assumption the conversion rests on.

A mini program inherits its identity and its payment rail from the app hosting it. That mechanism, and what the four Western equivalents do instead.

An aggregator that collects 20 trending lists every night. Six sources broke in ways worth keeping a record of, and one of them is gone for good.

The form returned success. The subscriber appeared in the right group. The one thing that failed was in an inbox I do not control.

2,130 bytes of HTML, 1 KB of my own JavaScript, no framework. Then the newsletter form loads jQuery, and the number stops being funny.

The scope of Field Notes, how often it updates, and why the numbers here have to come from a script.

One part, two quotes, line by line: the buyer each price is built for, the tax line, the freight leg, the MOQ unit, and how to put both on one basis.

A forwarder quote is a stack of other people's rate cards: which lines are published, which are private price, and how to check the two credentials.

A per-document pass over a China export: what each paper must carry, which origin proof applies in which case, and what a mismatch costs.

Five official registries, the fields that matter in each, what a clean record does not prove, and the payment sequence that does more work than any check.

Public container freight index readings for the main Asia-outbound lanes, each with its as-of date, what the indices measure, and what a quote adds.

The split chain behind a livestream sale — platform fee, promotion fee, slot fee, agency cut — and when the money lands. Every number has a source.

A responsibility map for EXW, FCA, FOB, CFR, CIF, DAP and DDP — who books the freight, who clears customs, who pays duty — with every rule sourced.

A field-by-field pass over a quotation for a custom part — what is on the page, which lines carry the money, and which numbers nobody publishes.

Where a visitor can buy a SIM, what real-name registration asks for, the filed prices by carrier, and when a mainland number is actually needed.

Passport verification, the staffed boarding lane, the refund and change fee tiers, and why two trains on one section can differ by 249 yuan.

Four official pages print four different foreign-card limits for Alipay and Weixin Pay. Each platform's own wording, with a source and a read date.

Which channel charges a fee and who may hold your money, the clauses a lease has to contain, and the official route when a deposit is withheld.

A passport gives you a patient record at a Chinese hospital, but booking channels, fee tracks and waits differ by hospital. Rules and waiting-time data.

The eight-section brocade, move by move: a timeline table, what each movement asks of the body, the mistakes the official sheet lists, and when to stop.

How many of the 1,000 and 3,000 most common Chinese characters sit under each of the 214 Kangxi radicals, and every rule the count depends on.

Early market, wet market, corner shop, warehouse club, delivery app: unit prices by category where a public source exists, plus three monthly baskets.

The history side of the habit — tea, fuel, bacteriology and slow plumbing — with a date and a link on every number, and a list of what I could not verify.

High-speed rail and half-hour delivery read as temperament. They are density, labour, a standard address, state capital, and a promised time.

Add up China's 31 provincial GDP figures and the total does not match the national one. The gap is computable, and the statistics office explains it.

The same lithium-ion battery shipments counted by the exporter and by the importer. The money nearly matches. The kilograms do not.

China's express volume and the world's e-commerce parcel totals measure different things. A year-by-year table with a source and a date on every number.

The statistics office says 67.89 per cent of China lives in a town or city; the World Bank says 66.34. Neither answers my question about one county.

五件写了具体型号的东西，中国官方标价与美加官方标价并排摊开；首重续重、体积重除数、行邮税与跨境电商税、汇率取数日逐条写明，算不出的格子写没核到。

多伦多、温哥华、纽约、洛杉矶、悉尼、墨尔本、东京、伦敦，按月把房租、水电网络、交通、超市、外食、手机、医保拆开，每个数字带来源和日期，口径不同的地方单独写清。

回国收尾和出国准备各一张清单，每行只给官方入口、关键材料、链接和我核对的日期。附 2026 年 9 月 15 日新规带来的变化。