By the eighth century, Tibet had become one of China's most powerful neighbors; from the 760s-780s, Tibetan forces raided the [[Tang Dynasty]] capital of [[Chang'an]] every autumn. Raids grew less frequent after that, but continued into the 9th century, when the kingdom of Tibet began to decline. | By the eighth century, Tibet had become one of China's most powerful neighbors; from the 760s-780s, Tibetan forces raided the [[Tang Dynasty]] capital of [[Chang'an]] every autumn. Raids grew less frequent after that, but continued into the 9th century, when the kingdom of Tibet began to decline. |