Patrick Frater Asia Bureau ChiefJack Ma, the iconic businessman and co-founder of Alibaba who had been reported by media as missing, made an appearance this week in public, Chinese state media reported on Wednesday.Ma met with 100 rural teachers via a video meeting, Tianmu News, a news portal that belongs to Zhejiang Online, a government-backed news website, reported.The news was also carried by state-owned tabloid, The Global Times.