Before leaving Mexico in 1933, Ou-yang owned a row of storefronts lining an entire street which supplied matches, coal, beer, coal oil, and other staple items to the residents of Mexicali.
截至一九三五年離墨時，他已擁有一整條街的店面，並兼墨市火柴、炭、啤酒、煤油等民生必需品的總經銷。