Backwardness is to be beaten, if a country does not have the ability to protect itself, then it is easy to be bullied, so many small countries hope to be able to get the blessing of powerful countries, there was a small country that hoped to join our country, so that you can no longer be invaded, they insisted on applying for 149 times to join our territory, but we have been rejected, and then this country actually chose to hang the Chinese flag directly.

Sikkim This country is located in the southern slope of the Himalayas, because of the small land area and sparse population, coupled with the country's poverty and backwardness, so since ancient times it has often been bullied and invaded, in the Qing Dynasty Sikkim was often attacked by Nepal, when Sikkim wrote a letter to the Qing Ruler Qianlong for help, the Qing soldiers came to Kathmandu in one fell swoop, helping Sikkim to relieve the crisis, so Sikkim has been very grateful to our country.
After the industrial revolution, the Western powers have been crazy exaggerated, weak Sikkim is naturally often bullied and threatened, and the Qing Dynasty also has no time to take care of Sikkim, this time Sikkim has been invaded and harassed by India, after the founding of New China, Sikkim hopes to get the assistance of our country, in order to get rid of India's aggression against them, Sikkim expressed its desire to join our country, but our country was really powerless to wait for the revival.
After our country refused Sikkim to join, Sikkim directly hung our national flag, and also announced to the world that sooner or later it would join China, but in the 1970s, because of India's invasion, the Kingdom of Sikkim was forced to become a state of India, and in 2003, china also recognized tin metal in India, and they are still in a deep life under India's governance.