The One China policy is a tough deal to break, and during the opening of the National People's Congress, Premier Li Keqiang made that clear.
Mainland officials have recently severed communication with Taiwan and have expressed anger over the actions of President Tsai Ing-Wen.
"We will never tolerate any activity, in any form or name, which attempts to separate Taiwan from the motherland," Li wrote in his speech.
China was also angered by news that the Taiwanese president and U.S. President Donald Trump were talking. The U.S. President then stated that he will consider the U.S.'s position on the One China policy.
After much exchange of threats from both countries, President Trump eventually agreed to support the One China policy.
A letter was delivered by National Security Adviser Michael Flynn, who had also spoken to China's top foreign policy official. The letter was from President Trump who indicated that he wanted "constructive relation" between the two countries.
For the first time during the Trump administration, communication was established between the two strongest countries in the world.
Ivanka Trump attended Lunar New Year celebrations at the Chinese embassy in Washington to woo China into continuing talks with America. That was also the first time that a member of the first family reached out to China.
With the U.S. backing off from the China-Taiwan conflict, Premier Li said that the One China policy is non-negotiable.
China has recently conducted military exercises in the Taiwan strait. Taiwan's defense minister acknowledged the threat from the mainland.
Li also mentioned that Hong Kong should also stop resisting China's governance over the former British colony. The "one country, two systems" should be applied "without being bent or distorted", said Li.
The interpretation of Hong Kong's Basic Law was ratified by the mainland to block Hong Kong officials seeking independence from being elected into office.