Photo taken on April 16 shows tourists paddling a bamboo raft through the expansive dawn redwood forest in Hongze Lake Wetland Scenic Area in Sihong County, Suqian City, Jiangsu Province. (Photo/CFP)

Photo taken on April 16 shows tourists paddling bamboo rafts through the expansive dawn redwood forest in Hongze Lake Wetland Scenic Area in Sihong County, Suqian City, Jiangsu Province. (Photo/CFP)

An aerial view of a heart-shaped pathway in Hongze Lake Wetland Scenic Area in Sihong County, Suqian City, Jiangsu Province. (Photo/CFP)

Photo taken on April 16 shows tourists paddling a bamboo raft through the expansive dawn redwood forest in Hongze Lake Wetland Scenic Area in Sihong County, Suqian City, Jiangsu Province. (Photo/CFP)

Photo taken on April 16 shows tourists paddling bamboo rafts through the expansive dawn redwood forest in Hongze Lake Wetland Scenic Area in Sihong County, Suqian City, Jiangsu Province. (Photo/CFP)