Something very strange happened in Tuen Mun on October 28th, 2019. Starting around 4:00 pm, residents of the Tai Hing neighborhood reported both smelling tear gas and showing common tear gas symptoms. Photos collected by Apple Daily from the scene show both residents and firefighters responding to something. Residents and netizens quickly came to the conclusion that HKPF was either ‘testing’ new tear gas at their Tai Hing Operations Base…