8老师好！
妈妈绿卡，前段时间申请了 I-131 回美纸，现在case状态如下，请问可以离开美国了吗，还是需要等收到正式的回美纸后，才可以回中国呢？
As of March 30, 2022, fingerprints relating to your Form I-131, Application for Travel Document, Receipt Number LINxxxxxxx, have been applied to your case. If you move, go to www.uscis.gov/addresschange to give us your new mailing address.