Explanation: Swallow at the flames of the nest. Metaphor of the situation is very dangerous. Source: Qing Xiao Bo Shan Ren "patriotic spirit loyalist" Pa Zhipa decadent Lin Yan at risk buildings such as the nest. " Examples: A lively puppet children, still boiling kettle of fish swim, ~. Qing Nan Quan ★ Unofficial History, "sighed old"