Jerry Grey and Ann Liang made their home in south Guangdong province in Zhongshan in 2004. Over the past 2 decades, the couple took on the mission of traveling across China on bicycles and raise fund for local charity works in the city of Zhongshan. Culminating over 35,000 kilometers, they have cycled across the country "from north to south, from east to west, and from west to east," says Jerry. Along their journey, Jerry and Ann have borne witness to history while watching first-hand the phenomenal changes in China.