Playing basketball with my son

Today is Sunday. The smog was gone today,and the sky was clear up. Due to the heavy air pollution in Beijing, We seldom do outdoor activities. We just stay at home with the windows closed, so the polluted air can't get indoors. On the other hand, we do need to be more physical active. Hence my family went to the small in park in my neighbourhood, where there is an small spare *do you mean a basketball court*. There I played basketball with my son. Actually he did not have any idea of how to play it, and he just picked up the ball from the ground. Anyway, he was so excited about it. I believe it is a good way to improve our relationship. I still remember my father seldom playing with me when i was little. I know lives were much tougher back then than those nowadays. People must struggled to raise a whole family. My parents my worked day and night to earn what we needed to satisfy basic needs. 

That is a pity, and I won't allow this to happen again during my son's childhood, and to leave some regret in his memories.
On the other hand, to keep healthy he needs to play in the sun everyday. How can we do that during such bad days in Beijing. Anyway, on most days, the official media is always suggesting that the public does not go outdoors or open windows due to the bad air condition.