TFBoys (Chinese: 加油男孩, 加油少年; pinyin: Jiā Yóu Shào Nián, stylized in all caps), also known as The Fighting Boys, is a popular Chinese idol group that consists of three members: Karry Wang (王俊凯; Wáng Jùnkǎi), Roy Wang (王源; Wáng Yuán), and Jackson Yee (易烊千玺; Yì Yángqiānxǐ). The group debuted on August 6, 2013 with their first single album "Start of Love" at the young ages of 12 and 13 years old. Within a year of their debut, Tfboys became one of the most popular artists in China with their hit song "青春修炼手册 Manual of Youth" and gained widespread popularity throughout Asia. The group as a whole have an estimated commercial value of more than US$430 million (CN¥3 billion) combined from endorsements and branding as of 2018, and their average sales per member from band merchandises alone amasses more than US$17 million per month.
They are often cited as one of the most influential acts to shape the Mando-pop industry in recent years by helping to spread Chinese culture internationally and are dubbed as one of most successful Chinese boy band to hit mainstream media in terms of sales, influence and endorsement value. As of 2018, they have a gathered more than 200 million followers combined on Sina Weibo and have ranked in Forbes China Celebrity 100 for 4 consecutive years since 2015, becoming one of the youngest celebrities to make it onto the list. The band is seen as a spiritual successor of former Chinese band Xiao Hu Dui by the media due to high similarities between them.