穷开心 (qióngkāixīn) to enjoy oneself despite poverty; to be foolishly happy
Usage:
“穷开心”是上海方言，“穷”本身就有极为的意思，指没事瞎开心，没有缘由的开心。
“穷开心” is a saying from Shanghainese. “穷” means extremely, so the phrase means to be happy without any event or any reason.
Sentences：
1、Nǐ lián xiàngyàng de gōngzuò dōu méiyǒu , jiù zhīdào qióngkāixīn.
你连像样的工作都没有，就知道穷开心。
你连像样的工作都没有，就知道穷开心。
You don’t even have a job but are foolishly happy all the time.
2、Tā de lèguān, yōumò hé qióngkāixīn, zhèngshì tā chángshòu de guānjiàn.
她的乐观、幽默和穷开心，正是她长寿的关键。
她的乐观、幽默和穷开心，正是她长寿的关键。
She is optimistic, humorous, and foolishly happy, which are the keys to her longevity.
