對（2）附加一個小問題。如果I130沒下來，但B2簽證到期，受益者離境，是否就意味自動放棄綠卡申請？
-No. If 受益者 does not file I-485, he/she can apply for the immigration visa in China using consular processing. If I-485 is filed, they can use AP to go back to China. if not use AP, the I-485 will be invalid, but they still can apply for the immigration visa in China.
