The couple documented their life on Douyin – showing their hobbies that included climbing mountains, fishing in the wild and learning each other’s languages – where they attracted 63,000 followers.

According to Wang, they went to a barbecue on the evening of March 27 and drank wine. On returning home, Nana drank another two glasses of beer.

“Later, she said she had a headache and swallowed several pills that she had brought from Russia,” Wang said, adding: “I was nervous because I did not know what kind of medication it was.”

With the help of a translation app, he found out it was a painkiller. The instructions warned people not to take too many at a time.

Some time later, Nana vomited and became unconscious, so Wang called the medical emergency hotline and his wife was rushed to hospital where she had a heart attack.

Her father flew to Guiyang in April, but her mother could not come because of health issues. Nana was their only daughter.

The Russian woman got to know her Chinese husband-to-be in Guiyang when she was a student at Guizhou University.

Wang, a tattoo artist, who has two children from a previous marriage, said the couple had planned to have a baby this year.

“She had opportunities to meet better guys with more money. But she said she did not care about that aspect,” Wang said.

Both families were distraught after Nana’s death, and had not stopped crying, he said.

The sad news was viewed 88 million times on Weibo.

“Nana, rest in peace. Hope you have no illness in the other world,” one online observer said.

“So sorry for her death. Everybody, please bear in mind, do not take medicines after drinking and do not drink after taking medicines,” said another.