This problem has been considered. After 70, they are all moving towards 5. Our generation has experienced hardships and good times in life. Most of the conditions for seizing opportunities are good, and they have no worries about food and clothing. The children have grown up slowly, and fortunately they have become grandparents and grandparents. Of course, the next step is to consider your own pension. The child has his family and his life, and it is time to rest after hard work. It is actually quite good to find a place with good air, good environment, good transportation and good medical care, a house and a yard for collective pension with the other half or a few like-minded friends.