Yanshan University. In the TV series "90 Marriage Agency", Yu Jiahui studied at Yanshan University in Qinhuangdao City, Hebei Province. Yu Jiahui studied hard at school and started his career after graduation. What the 90 matchmaking agency said was that Yu Jiahui would lead the super matchmaker group to the city with the highest single rate. On the premise of paying attention to young people's values and getting rid of the single problem, he will provide them with independent and efficient opportunities to make friends, help all young people understand the relationship between marriage and love, and let single young people find their favorite "TA".