拱手河山讨欢
[gŏng shŏu hé shān tăo huān]
'Gong Shou He Shan Tao Huan' refers to bowing and offering even the mountains and rivers (i.e., a grand realm like a country) just to seek pleasure or favor. It signifies immense self-sacrifice or concession made willingly by one party, possibly to keep love or maintain relationships.