See All the Mountains and Rivers in the World, Come Back and Tell Her About It

The protagonist "Shen Nian" (who has different names in different eras, retaining the surname or homophony of "Shen") is a soul resurrector who retains all memories of past lives and has no ability to predict. Each life is parasitic with different identities and different bodies, traveling through the mountains and rivers of China with an unchanging innocent heart.