Generous tipper drops $1K at his favorite Chinatown takeout joints

As tips go, this is way over 20 percent! A Mandarin-fluent foodie has filmed himself dropping $1,000 tips at five of his favorite, but struggling, take-out joints in Manhattan’s Chinatown — and the video of his startled beneficiaries trying to give him back the money is just heartwarming. “I got five thousand dollars,” YouTuber XiaoMaNYC…