Interview is a mere formality. You must prepare to pass your Chinese ATPL examination and stringent medical tests. ICAO radio telephony test is routine stuff.
If you failed the ATPL exam, you are logged out for about a month. Retake depends on the next available date.
Company doctor can help to facilitate a smooth medical, but cannot help if you have high sugar level or borderline stress ECG.
There have been cases of guys failing to meet national security clearance, not wise to quit your current job.
After simulator, minimum line training required.
Be prepared for constant scheduled changes, mainly due to AOGs. Never pack for one day layover.
Management likes to be appreciated if you know what it means. Be a good team player. Make sure you know the team sports.
Good luck.