Mask
Every day we enter the house and get stay with different buildings. Some people go to work, some go to the station, and some go park for their purpose . With the outbreak of the COVID-19 epidemic, masks have become essential items when going out. Mask up day and night everyday. Everyone is trying to maintain a normal life hardly. The appearance of the building is the same as usual, but the people who are different from before. You can not see the expression on face. This changes are tiny for building. The danger is hidden in the invisible microcosm.