Wang Weijia (Chinese: 王維家; pinyin: Wáng wéijiā; born 1 October 1994), better known by his stage name Mao Bu Yi (Chinese: 毛不易; pinyin: Máo bùyì) is a Chinese singer-songwriter from Heilongjiang who rose to prominence for winning the all-male singing competition The Coming One (明日之子) in 2017. He released his debut album Perfect Day (平凡的一天) in 2018, and achieved two No. 1's on the Billboard China singles chart in 2019. In 2020, he released his second debut album Xiao Wang (小王). He also held an online concert in the same year.