I was very active in a Chinese church for many years and I never met a Fan. When I worked at Logos, my boss was Andrew Wong and there were two Dr. Wongs teaching in the physics department at UCLA when my husband was a student there. One of them was also on the Logos board.
At church Wong was the most popular surname. In our small church we had two Jungs, a Nih family, a Chew family, a Lau family (founding pastor), lots of Lees, a Tong family, a Fong family, a Low family, a Lim family, a Hoy family, an Au family, a Lum, a Lipock family, a Cheng family,, a Joe family, a Chao, and a couple that may have been changed, Young and Dott. I have left out a couple of maiden names that won’t come to mind. When a Tong married a Young, they named their first son Ryan. Got to Zoom off to church now.