Wang Weijia (Chinese: 王維家; born October 1, 1994), better known by his stage name Mao Buyi (Chinese: 毛不易) is a Chinese singer-songwriter from Heilongjiang who rose to prominence for winning the all-male singing competition The Coming One in 2017. He released his debut album 《平凡的一天》 (Perfect Day) in 2018 and achieved two number ones on the Billboard China singles chart in 2019. In 2020, he released his sophomore album 《小王》.