@ TAROU: Thank you for your answer and I'm sorry for my delay. For now, anyway, I think I'll stick to the official rules, until some sort of arbiter shows me they've changed since the World Xiangqi Federation published them in their website. :-) Kind regards.
(hide) If you want to play a game with an opponent of a similar level, you can define a required BKR range for a new game invitation. Then nobody with a BKR outside this range will be able to see/accept it. (Katechka) (show all tips)