So ADWcleaner didn't delete my Tencent language input? I don't believe so. Because it was fine and after I scanned my computer with ADWcleaner and MBAM, it started working abnormally. ADWcleaner may have taken it as adware and deleted it. Besides that, my icon is back after a restart (sorry for the mistake) but my disk space shot up by a few gb just now although I didn't add or remove anything, very weird...