[Open invitation announcement]
Dear travelers:
I wish you all a happy reading day. It is time to welcome new travelers again. Here is the opening announcement:
1. Invitations are open for three days, and the invitation issuance limit is reduced to the top 30% of the overall ranking;
2. The entire site is free for three days;
3. The invitations are sent using the URAS system. For specific rules, please see the invitation system and URAS system and invitation deposit [RL Wiki]