Definition: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
Input: Tzu Chi was the first force from outside the People's Republic of China to join the rescue effort.

Tzu Chi joined the rescue effort. They were the first force outside of the People's Republic of China to do so.