No matter what type of visa you hold, please remember your visa expiration date clearly. You will not be allowed to stay in China after your visa expires. Otherwise you may be fined 500 RMB/day for the period of your illegal stay in China with the total sum of fine not exceeding 30000 RMB, or detained from 3 to 10 days. Those whose offenses are serious may be ordered to leave the country within a specified time.