Wong and his brother Edgardo established a poultry farm and tended it for seventeen years. Eventually, Erasmo Wong Jr. became the head of his family's supermarket chain, also opening the supermarket chain Metro that then employed over 8,000 employees, advancing the company past Chilean competitors. Under the government of
Alberto Fujimori, which surrounded itself with many Asian collaborators, spanning into the period of China's growing presence in Peru during the early 21st century, Wong began to approach Chinese entrepreneurs and the elite in Peru, establishing a higher social status in the process. In December 2007, Wong supermarkets – which controlled sixty-two percent of Lima's grocery market at the time – was purchased from Wong's family by the Chilean retailer
Cencosud for US$500 million. He still is a member of the Wong supermarket's board of directors. In November 2015, Wong purchased
Willax Televisión, a television channel that has since been described as promoting conservative and right-wing political stances by international media outlets.
Perú.21 reported in 2019 that a group of Peruvian investors attempted to purchase the journalist branch of
El Comercio Group in what was called "Operation Caledonia", with the operation reportedly receiving assistance of former
mayor of New York City and
Keiko Fujimori's former advisor,
Rudy Giuliani. According to journalist
Augusto Álvarez Rodrich, Wong was included in the Operation Caledonia group,
Rafael López Aliaga and the
Popular Force politician
José Chlimper. == Personal life ==