Not mean that.

No one will cancel your green card (GC). If you stay outside US for more than 6 months and less than one year, the CBP officer normally takes a note on your paasport and this will not affect your GC. Unless you will go forth and back between China and US frequently (in this case the CBP noramlly give you warning and ask you to get the reentry permit for the next time travel), you do not need to do anything at this point and nothing needed to worry about. 

所有跟帖： 

• 謝謝，我還是擔心電腦上有記錄，換護照可以嗎？ -woshihaoren- ♀ (0 bytes) () 10/23/2010 postreply 13:08:27

• 回複：謝謝，我還是擔心電腦上有記錄，換護照可以嗎？ -863211- ♂ (334 bytes) () 10/23/2010 postreply 16:07:19

• thank you,but.. -woshihaoren- ♀ (135 bytes) () 10/23/2010 postreply 16:16:44

• 每半年回來一次很容易被視作“無誠意在美國居留”，所以在你護照上加注也很正常。 -wells1999- ♀ (105 bytes) () 10/23/2010 postreply 16:23:56

• Wells1999 is right. -863211- ♂ (150 bytes) () 10/23/2010 postreply 16:46:48

• 謝謝，因為我暫時還不能在美國工作，就得先保持， -woshihaoren- ♀ (25 bytes) () 10/23/2010 postreply 22:43:11

• 我覺得電腦裏肯定有記錄的。你沒看見每次入關的時候，他們在電腦裏劈裏啪啦打一堆字嗎？ -wells1999- ♀ (27 bytes) () 10/24/2010 postreply 08:46:45

• 謝謝，但是 -woshihaoren- ♀ (117 bytes) () 10/25/2010 postreply 22:40:24