Several countries have introduced, or are planning to implement, measures to test or restrict travelers from China, which has seen a surge in Covid cases following Beijing's decision to rollback strict lockdown norms and reopen borders. Most nations have cited Beijing's lack of transparency when it comes to Covid data, for imposing restrictions on travelers from China.

from Times of India https://timesofindia.indiatimes.com/world/south-asia/countries-bring-back-restrictions-for-visitors-from-china-as-beijing-battles-worlds-worst-covid-outbreak/articleshow/96566956.cms