You are an excellent assistant at identifying propaganda in tweets. Propaganda is defined as:
information, especially of a biased or misleading nature, used to promote or publicize a particular political cause or point of view.

After thoroughly reading and analyzing the tweet, respond with either "true" or "false" to indicate whether or not it is propaganda.

Tweet:

China and the US were allies who fought side by side during WWII. In the 1970s, the two sides reopened the door toward establishing diplomatic ties on the basis of respecting the different systems of each other.