1988, 38-year-old Yu Chunshun quit his job, bid farewell to his family and started hiking alone in China. Starting from his hometown of Shanghai, journey to the south went to Jiangsu, Shandong, Hebei, Liaoning and other places. He has successively crossed Sichuan-Tibet, Yunnan-Tibet, Qinghai-Tibet and Xinjiang-Tibet, becoming the first human to cross Tibet on foot.

In the 1990s, 30 years ago, hiking in Tibet was not as safe as it is today. At that time, the Sichuan-Tibet line had just been built, and there was no Gps signal and no ready-made strategy. There were few people along the way. Not only may you encounter wild animals and extremely cold weather, but even the direction can only be navigated by a basic compass.

In the past eight years, Yu Chunshun wrote down and recorded his adventures while hiking in the great rivers and mountains of China. He traveled all over the country in 24 provinces, municipalities and autonomous regions, visited 33 ethnic minorities, took more than 6,000 photos, published more than 500,000 words of travel notes, and published Yu Chunshun Walking in Tibet in Shanghai Literature and Art Publishing House.

Surrounded by overwhelming legendary reports and mysterious atmosphere, he was an adventure hero in people's hearts at that time.

However, Yu Chunshun's childhood was not glamorous. The gloomy family education, poor and hungry days and bad social atmosphere, although immersed in Xu Xiake's imaginary hiking world, are inevitably exposed in the mud and untouched. 16 years old, was caught stealing in a university and spent three years in Shanghai Juvenile Correctional Institution.

My brothers and sisters all suffered from schizophrenia, my son died of suffocation prematurely, and my wife's marriage broke down. About life, all these tragedies seem to give Yu Chunshun a plan, which makes him unable to settle down, and thus leads to the following story.

1988, after visiting Xu Xiake's former residence, Yu Chunshun finally set off and went all out to pursue his almost moldy dream. Follow the only light of his dark childhood and go to the flowing world written by Xu Xiake.

After hiking the main route in Tibet, he plans to start hiking in Xinjiang and cross the no-man's land.

There are four uninhabited areas in China: Qiangtang in Tibet, Lop Nur in Xinjiang, Hoh Xil in Qinghai and Altun in Xinjiang. His first challenge is the northernmost no man's land in China: Lop Nur, known as the "Sea of Death".

Nothing grows around Lop Nur, which is one of the worst natural environments in China. Lop Nur in June, the surface temperature is 60, dry and hot, which is the most difficult January among the four seasons.

Yu Chunshun, relying on his experience of traveling all over the country, believes that he can overcome these harsh natural conditions. Before entering Lop Nur, Yu Chunshun confidently told Shanghai TV: "I want to break the myth that I can't cross Lop Nur in June!"

After Yu Chunshun left, a sudden sandstorm blew for a day and a night. The date that should have been agreed with the photography team, Yu Chunshun did not arrive as scheduled.

After five days of search and rescue, a PLA soldier on the helicopter found a blue spot on the lake basin. That's the tent that Yu Chunshun was blown down by the desert. Yu Chunshun in the tent, with swollen head and blurred facial features, has long lost signs of life. Forensic identification showed that Yu Chunshun died of acute dehydration and systemic failure caused by lack of water in high temperature environment.

According to his will, people buried Yu Chunshun where he died. In the following decades, every group of explorers crossing Lop Nur will get off before passing his grave, pay tribute to the surrounding tourist attractions and put a bottle of mineral water in front of the tombstone. Over the years, there have been mineral water bottles on Yu Chunshun's tombstone.

Surprisingly, only 3 kilometers away from Yu Chunshun, there is a buried water point. People are puzzled about the cause of his death: as such an experienced explorer, Yu Chunshun was killed only 3 kilometers away from the water intake. Why?

Looking back on Yu Chunshun's career, almost all four words in his photos are written like this, two of which are "China" and the other two are "hiking".