装痴卖傻

Explanation: Deliberately pretending to look like dementia. Yang Shuo "three thousand miles to suffer" the tenth paragraph: "Wu Tianbao said: 'You do not have equipment to sell silly crazy, with me playing this! Of our business how you intend to do?'" Also as "crazy as a stupid loaded." Lu Xun's "canopy _set_ sequel <Miscellaneous, etc. On the nosy Gray scholarship>": "At a minimum, but also about what s ok, though their was no clear understanding in consciousness, or in fact knew, and deliberately installed silly as silly. "