Cars with yellow ribbons tied to the rearview mirrors is seen in Jianli, central China's Hubei Province, June 4, 2015. A cruise ship carrying more than 450 people on Monday sank in the Jianli section of the Yangtze River. Many local drivers are joining the rescue effort by offering free rides for rescuers and relatives of victims with the sign of yellow ribbons. (Xinhua/Hao Tongqian)  

A car drives on a street with yellow ribbons tied to the rearview mirrors in Jianli, central China's Hubei Province, June 4, 2015. A cruise ship carrying more than 450 people on Monday sank in the Jianli section of the Yangtze River. Many local drivers are joining the rescue effort by offering free rides for rescuers and relatives of victims with the sign of yellow ribbons. (Xinhua/Hao Tongqian)

A car drives on a street with yellow ribbons tied to the rearview mirrors in Jianli, central China's Hubei Province, June 4, 2015. A cruise ship carrying more than 450 people on Monday sank in the Jianli section of the Yangtze River. Many local drivers are joining the rescue effort by offering free rides for rescuers and relatives of victims with the sign of yellow ribbons. (Xinhua/Hao Tongqian)

A car with yellow ribbons tied to the rearview mirrors is seen in Jianli, central China's Hubei Province, June 4, 2015. A cruise ship carrying more than 450 people on Monday sank in the Jianli section of the Yangtze River. Many local drivers are joining the rescue effort by offering free rides for rescuers and relatives of victims with the sign of yellow ribbons. (Xinhua/Hao Tongqian)

A taxi drives on a street with yellow ribbons tied to the rearview mirrors in Jianli, central China's Hubei Province, June 4, 2015. A cruise ship carrying more than 450 people on Monday sank in the Jianli section of the Yangtze River. Many local drivers are joining the rescue effort by offering free rides for rescuers and relatives of victims with the sign of yellow ribbons. (Xinhua/Cheng Min)

A car drives on a street with yellow ribbons tied to the rearview mirrors in Jianli, central China's Hubei Province, June 4, 2015. A cruise ship carrying more than 450 people on Monday sank in the Jianli section of the Yangtze River. Many local drivers are joining the rescue effort by offering free rides for rescuers and relatives of victims with the sign of yellow ribbons. (Xinhua/Cheng Min)