Had a go at it about 2 years ago, for Air China Cargo on the 747.
There was a written test, 100 questions based on the FAA system. Questions were (supposingly) Google translated into chinese and back again, resulting in.....chinglish. About 60% of the were general ATPL q's, 20% technical on the 767, mostly about fuel dumping. Charts were required to answer the questions, but none were provided..... Last 20% og the q's were Air China Cargo procedures.....
Were told afterwards that whether you got more or less then the passmark didn't matter. The written test was a CAAC requirement, not a company one.
Interview quite straight forward. Took about 15 mins. What have you done before, and why do you want to work for us. Do you have any questions.
Sim: crosswind landings. Crosswind landings. Crosswind landings. Bring your own QRH. Theirs is in local language ;-) staight forward sim, no surprises.
Medical: the big issue. We were 16 to start with. 5 passed the medical the first time around. Don't know if any went back for 2nd attempt. And yes, they do check for HIV.
All in all; not difficult, but very different. Many of the doctors at the different hospitals we went to didn't speak a word of anything but chinese.
After the sim-check the check-airman shook our hand. While we shut down the sim, he just left (without telling us!).
There are many other small stories to tell, but bottom line for me; I managed to find a decent job closer to home :-)