分享一个opt dp

本人12月毕业，11月初申请opt，一个月不到就收到卡了，太快了。
Timeline：
10.31 寄出opt application
11.1 uscis系统更新case received
11.22 case approved, card is producing
11.24 card was produced
11.29 card was picked up by usps
11.30 收到卡

求大佬们加米！！！