 Taiwan agencies in Hong Kong and Macau have annually held a public ceremony to celebrate the National Day of ROC with members of pro-ROC private groups.The day continues to be celebrated in Hong Kong and Macau after the transfer of sovereignty to the mainland, but the national flags publicly shown have been removed by Police of Hong Kong since July 1997 and by Police of Macau since December 1999.Flag-raising ceremony at Hung Lau, Tuen Mun, Sun Yat-sen's revolutionary base, is the most noticeable yearly event, organized by Johnny Mak.