Mahjong problem, Taizhou people come in, Luqiao people are the best.

Question a, you can play red. According to Luqiao Mahjong, when playing whiteboard and red, the red one wins. According to the rules of Luqiao Mahjong, first win the red, then do the white.

Question b, if you have three generations of peppers in your hand, it is not a rule to match the whiteboard with red.

Question c, if you want to be a xianggong, you can be a xianggong, but you can't help playing cards. According to the rules of Luqiao Mahjong, there is no need to be a "xianggong" for one more card.