How about the Shanghai Xinxing Spring Talent Training Forum?

Not bad. Shanghai New Star Mathematics aims to improve the comprehensive quality of mathematics talents, while also taking into account the expansion of personal expertise to prepare for the National High School Mathematics League. Shanghai Xinxing is committed to building a national brand in independent research and development technology and has an unyielding spirit of hard work; it is these trainings that have created a team that can fight and win battles, helping Shanghai Xinxing overcome obstacles all the way, from domestic to international, step by step On a bigger stage.