Hall and room wall clock is a must, especially in the general office, should hang clock hanging clock because in these places has five wealth and fortune, evil gas and the third is to help master fortune, fourmanagement of subordinates, the five meter time. However, if the clock hanging method is not sensible gas, hanging the wrong place to die, the front of the clock can not be inward, should be directed to the direction of the door or balcony as well.