You mean they don't stamp on any passport in HK and Macau!? I thought only Taiwan passports are not stamped.
Aww that's sad. Collecting stamps has always been a fun part in travelling.
But if they won't stamp in my US, I might just use Taiwan passport + Taibaozheng for simplicity then...
They don't stamp it,but instead give you a landing slip with all the information.It used to be stapled in your passport,but not anymore.
Visitors' slip's size is about half of credit card size and the resident's slip size is 2X the visitor one.