On July 5 last year, 25-year-old Chinese Tan Xueke accompanied two friends to a karaoke parlor in Nha Trang City. Zhao, Tian, and two others arrived later, entering into conflict with Tan, which escalated into a physical confrontation.
Tan then told his opponents to later return to the same karaoke parlor for another fight. In that fight, Tian stabbed Tan multiple times, causing him to be hospitalized before dying from his wounds.
The Chinese perpetrators then tried to evade authorities by driving to several locations, but were caught on July 8.
Police found drugs of several types, including marijuana, on Zhao's body and at his place of residence. The drugs were brought by Zhao from an unidentified compatriot, he confessed.