By the late 1930s, the family had established its entrepreneurial foundation in Saigon, South Vietnam. Under the leadership of the family matriarch, the Cheng siblings built thriving trading enterprises in household essentials, ironware, and auto parts, gradually expanding their reach across Vietnam and Cambodia. These ventures culminated in the establishment of Hhuán Chéng Steel, one of the region's foremost steel mills.
By the mid-20th century, the family had become recognised figures within Southeast Asia's business community, respected not only for their commercial success but for their civic contributions. Family members assumed leadership roles in educational, medical, and cultural institutions, reflecting a tradition that placed enterprise in service of the broader community.
