Choi Siwon's father, Cui Jihao, graduated from the Department of Administration of Dongguk University. He first worked for the present Hanhuo Group, and then went to Japan to sell gunpowder products and set up a wire control system. Later, Cui Jihao entered Bing-Grae, a well-known Korean food company, and was responsible for product development and business purchase. Later, he worked in the clothing industry in Fuji, a subsidiary of Fuji Textile in Japan, and became attached to fashion from then on. 20 1 1 Cui's father Cui jihao became the CEO of baoning Midian, the largest baby products company in Korea. SJ member Park Jung-soo once broke the news in a Korean program. Cui Jihao runs S Company, which is bigger than B Automobile Company, where Park Heng-sik's father is a director, and gives his mother the right to operate underwear brands exported all over the world.

In addition, Choi Siwon's father is now a professor at Korean Anglican University! So what's the experience of being a professor at a Korean university? According to the statistics of relevant Korean departments, the average annual salary of assistant associate professors is 56,000 US dollars, that of assistant professors is 665,438 US dollars+0,000 US dollars, and that of professors is about 80,000 RMB, which is only salary, excluding project funds. So being a professor in Korea is quite nourishing! Living in a mansion, driving a luxury car and going abroad for a holiday are of course paid! In addition, Korean professors have a very high social status and are particularly respected.