Indians when face with China, they are 杞人憂天, 無病呻吟.
無病呻吟: groaning, moaning but not sick, indeed very healthy.
杞人憂天, literally means "a Geman worrying about the sky (might fell down)"
Form an old story, a man of Ge Kingdom, keep worrying that the sky is falling down, and talk to anyone about...