Liu Zhilu once wanted to find an apple tree on the campus of Peking University to see. Not because of Eve and Adam, not because of Newton and Jobs, not because he loved to eat apples, but because he had never seen an apple tree since he was a child.

When he was very young, he always liked to think of the sheep's foot beetle as an apple tree, because the leaves of the sheep's foot tree looked like an apple, and his desire to see the apple tree was born out of his desire to correct this mistake when he was a child!

Unfortunately, there are peach trees, walnut trees, jujube trees, persimmon trees and other fruit trees in Peking University, but there is not a single apple tree. So, Liu Zhilu planned to plant one in Peking University.

Seeing that next to the middle of the aqueduct of the lake in the Minghe Garden, there was a large willow tree that had been cut down due to serious insect infestation, and Liu Zhilu felt that this was the best place to plant apple trees. At the same time, there is a persimmon tree opposite this location.

If the apple tree is alive, there will be an apple tree on the east side of the aqueduct and a persimmon tree on the west side. The persimmon tree represents Eastern humanity, and the apple tree represents Western science. When the two trees bear fruit at the same time, it indicates that Peking University's combination of Chinese and Western cultures is fruitful, and it can become a unique landscape of Peking University.

Liu Zhilu said that he would do it, bought an apple tree from Taobao and planted it next to the willow stump. Although he came to take care of it after work, the first apple tree did not survive the winter of that year and died.

In the spring of the following year, Liu Zhilu bought another two-year-old apple seedling and planted it in the new location. This time, the apple tree came alive, and at one point it grew almost as tall as a man.

But because the apple tree was not reported, it was not protected. There are always people who come to wreak havoc, one moment to break a branch, the other to peel a skin. After a few years, it should have been able to bear fruit, but due to the scourge of man, the tree became shorter and shorter, only a few centimeters high, and it was miserable......

In those years, in order to take care of the apple trees, the Minghe Garden was the area where Liu Zhilu was most active. He often came to water the apple trees and fertilize them. Sit on any bench in the area and read a book.

He found that the water in the lake had never been cleaned. The lake is always overgrown with various algae that emit a peculiar smell.

The reason for this is that the soil around the lake is very fertile. Whenever it rains heavily, a large amount of fertile water flows into the lake, resulting in eutrophication of the lake water, and the proliferation of various algae, causing a lack of oxygen in the water body and the inability of fish to survive.

How can this be cured? Liu Zhilu felt that it would be enough to raise three or two geese in this lake, and then raise a certain proportion of silver carp, grass carp and carp.

In the Minghe Garden, Liu Zhilu can often meet his favorite magpies and hedgehogs.

He carefully observed the magpies and found that the magpies were in pairs, with clean, beautiful and shiny plumage. And the single magpie feathers are dirty and damaged, and they are not shiny. This indicates that if you want to say goodbye to singleness, you must at least dress clean and beautiful, which is all natural. Because even the energy, time, and resources to maintain the appearance are gone, it means that it is weak, and the opportunity to reproduce is naturally gone.

He also discovered that magpies are also affectionate, and if he took a picture of a pair of magpies standing on the same tree at the same time, the two of them would get closer and closer, and they would become very close.

It's getting dark, just sit on the bench and wait patiently. It didn't take long for Liu Zhilu to hear the rustling sound in the grass, and he could go into the grass and start a tryst with the hedgehog. Therefore, when Liu Zhilu heard that a certain perverted girl in Peking University had caught the hedgehog in Peking University, put it into the common microwave oven in the dormitory and ate it, he was angry, just like when he saw the apple tree destroyed.

When a person devotes a lot of time and care to someone or something, it is natural for them to have deep feelings for it. That's why people are so concerned about their children, pets, potted plants, etc.