6 - Diligently ventilate
#6 in a series of panels from the Beijing SARs poster
6 – Diligently ventilate
Maintain office and residential air circulation. Fequently open windows to let air circulate inside for 30 minutes at a time, 2-3 times a day. Diligently clean and maintain a sanitary environment, diligently sun-dry clothes, bedding, etc. Ensure that air conditioning equipment is in good condition so as to ventilate properly, and wash the filter.
And the machine translation from http://www.netat.net/ :
Ventilate hardworkingly Keep the air of the office and dwelling unblocked. Through take and open the window, make the air circulate. Whether in room it ventilate for on the 30 minutes,2-3 times a day.the hardworking to sweep environmental sanitation is the hardworking to last clothes and bed clothes,etc.. Keep good performance of air conditioning , in order to ventilate, take and wash and separate the sharp network.