In Journey to the West, Tang Sanzang and his entourage passed through many countries and regions in China, including: 1. Southeast Asia: Singapore, Malaysia, Indonesia, etc. 2. South Asia: India, Nepal, and Pakistan places. 3. Central Asia: Kazakhstan, Kyrgyzstan, Madagascar, and other places. 4. West Asia: Saudi Arabia, Iraq, and the rest of the world. 5. Central and western regions: Chongqing, Sichuan, Yunnan, Guizhou and other places. The journey of Tang Sanzang and his party was very difficult. They had experienced many countries and regions, as well as many dangers and challenges.