Final answer:
The Tang Emperor Taizong supported and praised Buddhism, a foreign religion to China. Under his rule, Buddhism thrived and even became a form of state religion.
Step-by-step explanation:
The religion that was foreign to China but received praise and support from the emperor Tang Taizong was Buddhism. During the Tang dynasty, particularly under Tang Taizong's rule, Buddhism thrived. Tang Taizong was instrumental in the spread of Buddhism across China, creating a political environment that welcomed and nourished the development of Buddhism. His endorsement resulted in the building of numerous Buddhist temples. His support was so substantial that during his reign, Buddhism effectively became a state religion.
Learn more about Buddhism in China