The word "run" cn-simp. 润, this character is chosen because its pinyin is
rùn and it sounds like the English word "run", which probably comes from the slang 跑路 ("to flee"; lit. "run (away) along the road" means "to immigrate", or precisely, "to immigrate to a country outside of China". Why, you ask? Of course there are many reasons, why wouldn't there be?