If you are a Chinese citizen of the HKSAR and hold a valid Mainland China home return permit -LRB- 港澳居民來往內地通行證 -RRB- , can you enter Mainland China without it ?
If you are a Chinese citizen of the HKSAR and hold a valid Mainland China home return permit -LRB- 港澳居民來往內地通行證 -RRB- can you work and study in Mainland China ?