Lu Xun Park should still go during the day, you see me go at night, the black photos can't see anything, Lu Xun Park goes during the day, under the action of photosynthesis, you can still do oxygen inhalation. After all, the deep breathing of oxygen from the lungs is a good behavior for the body. We have too much now. The dirt gas is in the body, the exhaust gas of automobile exhaust, various industrial processing exhaust gas, etc.