Da Wei Sun

Guangzhou Knowledge Circle Network Technology Co., Ltd. is the private company behind the fun exercise (knowledge circle brand), which provides a professional online education counseling exercise punching tool. The company is based in Guangzhou, China. The tool helps teachers and institutions complete business scenarios such as admissions promotion, online lessons, counseling reviews, assignment correction, answer evaluation, etc. The Chinese company has more than 60,000 teachers and 10 million students. The company was founded in 2017, and the CEO is Da Wei Sun.

Shenzhen Haku Network Co. Ltd. develops internet incubator space operations community tools. The private company is based in Shenzhen, China. The Chinese company was founded in 2016 by Da Wei Sun.