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:

As the world is faced with major changes unseen in a century, China will firmly uphold the UN-centered international system, firmly uphold the international order underpinned by international law, and firmly defend UN's central role in international affairs. 🇨🇳🇺🇳 https://t.co/28tyaA52F6