Every entry is dated and sourced. Items marked in orange are the ones that change what you should actually do.
Transit rules in China change quickly and quietly — a new country list, a new port, a threshold that halves. The advice you read in a blog post from 2024 or in a guidebook printed last year is often wrong in ways that matter at the border. This log only contains dated items with a source attached.
If something here conflicts with what an officer, airline or official website tells you, believe them and let us know.