1000 kilometer cycling tour for father and son

38-year-old Yang Yaoyang takes a selfie with his 14-year-old son Yang Zhongxu, in front of the Bell Tower of Xi'an, capital of Shaanxi province, during their cycling trip on Tuesday, July 4, 2017. Starting from their hometown Sanmenxia in Henan province on July 2, the father and son have ridden over 200 kilometers to reach Xi'an. [Photo: IC]

Yang Yaoyang and his son Yang Zhongxu pose for a photo as they reached Xi'an during their cycling tour on Tuesday, July 4, 2017. The duo is heading to Chengdu in Sichuan province. The whole journey covers more than 1000 kilometers, taking eight days to complete. [Photo: IC]

Yang Yaoyang helps his son Yang Zhongxu to put on his mask and sun glasses in Xi'an on Tuesday, July 4, 2017, before continuing their way to Chengdu. The father said he hopes his son can withstand the hardships facing him during the journey and in the future, adding that he believes such a tour is also good for their relationship. [Photo: IC]

Yang Yaoyang and his son Yang Zhongxu ride past the Bell Tower of Xi'an on Tuesday, July 4, 2017, as they continue their cycling tour to Chengdu. [Photo: IC]