Translated. They are in fact playing strip mahjong. The bonuses in Ayas hand are:
1. Ri-pin (short for ri-chi + pinfu). Declaring ri-chi and having only sequences in the hand. Worth 2 yaku. 2. Tsumo. Drawing the last tile on your own. Worth 1 yaku. 3. Dora 2. Having two special dora tiles in the hand. Worth 2 yaku.