Explanation: Still twilight. Yu Yuan, myths and legends of Japan into place. "Huainanzi astronomical training": "to defend the Japanese Xu as Yu Yuan, is that evening." Chong Kui Ji School: "" Tai Ping Yu Lan "as a 'thin deep in danger'." Source: "Huainanzi astronomical training" Ba Day Xu Yuan as Yu, was that evening. "Chong Kui Ji school" Tai Ping Yu Lan "for 'thinner than Yu Yuan'."