A high-altitude search and rescue team found Liang Sheng Yueh in a canyon at around 2,600m (8,500ft) near Tipling village in Nepal's Dhading district.
The body of his companion, 19-year-old Liu Chen Chun, was lying nearby.
Mr Liang is being treated at Grandee International Hospital in Kathmandu and is said to be out of danger.
Dr Sanjaya Karki, who is treating Mr Liang, told Surendra Phuyal of BBC Nepal: "He can speak slowly. He told me his girlfriend died three days ago. He doesn't have trauma injuries, but his body has injuries stemming from worm-bites."
