Mock Duck arrived in the United States during the late 1890s, settling in New York's Chinatown, where he formed the Hip Sing Tong, a minor criminal organization.

Within a few years, Mock Duck challenged Tom Lee[1] and the On Leong Tong to control criminal activities in Chinatown, and hold the police and political protection of Tammany Hall.

"[2] Mock Duck survived repeated attempts on his life, including in February 1932 at his establishment in Newark's Chinatown[3] and wore a chain mail vest.

During several attempts on his life, Mock Duck reportedly squatted down in the street and fired at his attackers with two handguns with his eyes closed.

In 1932, Mock Duck agreed to an arrangement with the US and Chinese governments to declare a peace among the Tongs of Chinatown, and he retired to Brooklyn where he lived until his death on July 23, 1941.