From time to time, he appeared to be gyrating although it's not clear whether the couple were actually having sex.
He, his wife, two children, and over a dozen relatives drove the 900 kilometers back to Lüzhang in a convoy of four cars.
They told Xia to call an emergency number if any family members felt any form of discomfort.
He has produced more than 300 videos for Boston University, shuffling through a number of countries in the process: Australia, Argentina, Peru, Ireland, China, and Cambodia.