With the economic globalization becoming more and more mainstream, there are more and more economic, cultural and political exchanges between countries, and it is very convenient for all citizens to buy goods from other countries through logistics trade. However, in the18th century, the trade between countries in the world was actually not very convenient. Under such difficult conditions, the United States can still transport many goods from China to the United States, but Americans generally choose some more precious species and goods. At that time, the United States shipped goods from China to their own countries without paying any taxes or greeting. They just deliver what they want. This arrogant way has both advantages and disadvantages. Today, we are going to talk about the "endemic tree species" secretly introduced from China by the United States. After 200 years, how did it find that it was different from what it imagined?

I. Endemic species

This species is China Sapium sebiferum, with color leaves. In spring and autumn, the leaves of Sapium sebiferum are very bright. This tree species has existed in China for 1400 years. It has beautiful appearance and medicinal value. Its leaves, roots and trunk have various uses, such as gardening, detoxification and insecticide. It can be said that it is a treasure and an adaptability.

Second, the United States introduced tallow.

When Americans saw the great use of Chinese tallow, they had a bad idea. They also want to own this kind of tree, so they introduced it to the United States without saying hello to China people. As the saying goes, oranges grow in Huainan and oranges grow in Huaibei. The same species will have different changes in different geographical environments, and its growth will be different. This sentence can also be applied to the secret extradition of Sapium sebiferum by the United States to its own country, but the result is that the United States is puzzled. Sapium sebiferum is a precious tree for China, but a disaster tree for the United States. 200 years later, Americans found that Chinese tallow trees were planted on American soil, and their growth speed and vitality were so strong that Chinese tallow trees were everywhere in the United States. Fortunately, the Chinese tallow tree did no harm to other plants in America. This has not yet made money, but it costs money to control the growth rate of Chinese tallow, which makes the United States very puzzled.

Third, the regret of the United States.

Because tallow is found on many mountains in the United States, tallow is everywhere. Although the scenery is particularly beautiful, this growth rate makes Americans feel that it is a disaster. Today, the Chinese tallow tree is still growing. At the same time, because birds eat the seeds of Chinese tallow, and then they bring the seeds of Chinese tallow to all parts of the United States, which makes trees appear all over the United States. The United States spends a large proportion on the treatment of Chinese tallow every year, and the products made of Chinese tallow have reached the saturation level. Then the problem is that the supply of tallow exceeds the demand, which makes many people in China laugh and cry after seeing it. If you don't want it, just steal it. This kind of theft also made them get the punishment they deserved. You know, if you don't take something, you shouldn't take it. If you take it, you have to bear certain risks.