不哭不闹不任性不囍不喷不闹心
[bù kū bù nào bù rèn xìng bù xĭ bù pēn bù nào xīn]
Translated into English, it can mean 'No tears, no complaints, not capricious, without extreme joy or anger, peaceful' – expressing a mature and peaceful character; indicates an intention to keep calm and avoid unnecessary troubles at any cost.