Explain these two classical Chinese sentences: I have struggled all my life, and I have been working hard alone; It is wise to leave your ancestors early and come to Lu Yi late.

It seems to be a sign of fortune telling: the wealth of this life can only be obtained through hard work, and there are many things that need to be planned and managed by one person (one person can't cope with it, to the effect that it is not suitable for one person to do it alone); You'd better leave home early, and you can't count on the protection of your ancestors. When you are old, you naturally have food and clothing. Don't rely on your parents' help, try to stand on your own feet and have no worries in your later years.