A man knocks a woman off an escalator in Hangzhou, China, possibly due to financial troubles - Chinese report

A video showing a man pushing a woman down an escalator in Hangzhou, Zhejiang Province, China, was posted online, causing controversy.
A video posted online on the night of the 25th shows a man lying on the floor inside a shopping mall in the city's Gonshu district.
The footage shows him pulling the fallen woman's arm and dragging her away. I'm not sure if the woman is conscious, but I can't see her moving at all.
In another video, a man can be seen putting a woman on an escalator, lifting her legs and rolling her down.
According to police, the incident occurred around 9:55 a.m. (local time) on the same day. Is the man, Mr. Hu (33), having financial trouble with the woman, Mr. Lee (33)?
A fight ensued, and Lee reportedly punched her and destroyed her cell phone. After receiving a report from a bystander, police officers arrested Lee at the scene. Mr. Lee was taken to the hospital and suffered multiple injuries.
Bruises were seen, but he is currently back at home receiving treatment. Police currently have Mr. Hu in criminal custody and are conducting an investigation.