I'm in a good mood
It is a Chinese idiom. Pinyin is Xi à Q à y í s è, which means to look pleasant and have a submissive attitude. It comes from the book of rites.
Idiom usage
To act as an object or adverbial; deal with
Examples
And if a filial son is a relative, he must be downhearted and be filial.
Analysis of Idioms
Synonym: down and happy
The origin of Idioms
"The book of rites · neize" says: "parents have had it. They are downhearted and happy. They have a soft voice to remonstrate."
Idiom explanation
It describes a person who looks pleasant and has a submissive attitude. It's the same as "down and happy".
I'm in a good mood
one who , though retaining family ties , observes all the monastic rules - zài jiā chū jiā
children born of worthy parents - lán tián shēng yù
Looking north on behalf of the horse - dài mǎ wàng běi
suspicious appearance and movements - xíng jì kě yí