Residential windows close to the commercial roof smoke, does not comply with the norms. 2021 December 14, Guangzhou Municipal Environmental Protection Bureau issued a relevant document requires commercial restaurant fume emission outlet at least 10 meters away from the residence, the pipe should be 1.5 meters above the building. The guidelines point out that if it is really necessary to set up another external flue pipe to discharge oily fumes, the consent of the administrative department of planning should be obtained first, and at the same time the following conditions should be fulfilled: the minimum distance between the emission outlet and the surrounding residences is generally not less than 10 meters, and the height of the flue pipe is generally higher than that of this building and the buildings within a 10-meter distance from the surrounding buildings by 1.5 meters; in addition, the erection of the flue pipe should obtain the consent of the owners of the buildings to which the flue pipe is attached to the wall, as well as of the users of the flue pipe climbing frames. The user of the pathway unit consent, and obtain the consent of all users within 10 meters of the pipe.