Meaning of yā zi:
yā zi
鸭子
Noun
duck; male prostitute (slang)
Hú lǐ yǒu jǐ zhī yāzi zài yóuyǒng.
湖里有几只鸭子在游泳。
There are a few ducks swimming in the lake.
Zhèxiē nián wǎngshàng duì yā zi de tǎolùn yuèláiyuè duō.
这些年网上对鸭子的讨论越来越多。
In recent years, discussions about male prostitutes online have been increasing.