曾经有这么一个故事。一群马流浪到一片肥沃的草地,草地的这头碧波万顷,草地的那头沙海茫茫。马儿们忘乎所以地吃着鲜嫩的青草,觉得这是上天对他们的恩宠,从这头吃到那头,之后他们发现是一片一望无际的沙漠。这时候,几乎所有的马都惋惜再也吃不到这样好的草了。有的马继续前行, There was such a story once. A group of horses stray to a fertile meadow, the grasslands of this Bibo million ares, grass that vast sea of ​​sand. The horses forget to eat the fresh grass, think it is God’s favor to them, from the end of the head to eat the other end, then they found a vast expanse of desert. At this time, almost all the horses are sorry for not eating such a good grass anymore. Some horses continue to move forward,