Beautiful Oudong Temple

The Chinese told their emperor that the Khmers were already a powerful race, and should a naga appear through the cavern of Arthross, they would be strong enough to rule the world. The Chinese emperor did not want this, nor did he want a war. Instead, he asked the Khmer king if he could build a temple above the cavern, with the Buddha's face towards China in order to protect his empire. [Source]