希望子女谈多些包容，尽可能不要删帖，谢谢。

1. Korean American David Cho to lead President Biden's secret service detail

Jan 20, 2021

 https://en.wikipedia.org/wiki/David_Cho_(Secret_Service)

2. Number of martial arts participants in the United States from 2010 to 2023

https://www.statista.com/statistics/191917/participants-in-martial-arts-in-the-us-since-2006/