in a happy frame of mind
Chinese idiom, Pinyin is t á or á NZ ì D é, which means you feel happy. It's from Yang Hua's painting of Xuzhou.
The origin of Idioms
Su Shi of the Song Dynasty wrote in his painting of Xuzhou by Yang: "it's easy to be complacent to sit for ten years."
Idiom usage
As a predicate, attribute, adverbial; used in dealing with affairs.
in a happy frame of mind
climb trees to catch water from a flint - déng mù qiú yú
Holding the jade and holding the Pearl - bào yù wò zhū
a makeshift to tide over a present difficulty - wān ròu chéng chuāng
Simple words are few in meaning - yán jiǎn yì shǎo
The melon is hanging in the air - páo guā kōng xuán