Not untill the Ming emper- or Yongle did the friendly intercourse between the Emperor and Japanese General Ashikaga Yoshimitsu come true.

直至明永乐帝朱棣继位，才实现了与日本足利义满将军的友好往来。

youdao

To ensure the use of ships for his special envoys, Emperor Yongle also ordered all ship manufacturers to be engaged in ship building.

为保证出使诏谕海外诸国海船的供应，明成祖即位初期，就命各大造船厂建造大批海船。

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He got great support from Emperor Yongle in ships, materials and nautical technology, but mentally or spiritually speaking, how to encourage the morale of the troops was another strategic issue.

郑和在得到永乐帝的大力支持和远航船只、生活物资、航海技术等准备充分的同时，将士们的士气用什么来激励，也就是如何在思想上精神上有所寄托，这是一个战略性的问题。

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It was initially built under the auspices of Emperor Yongle between 1406 and 1420.

BBC: Beijing's once Forbidden City

Originally laid out by Emperor Yongle between 1406 and 1420 with the help of a mere million labourers, the complex is so vast - 800 buildings with 9, 000 rooms spread out over 720, 000 sq metres - that a full-time restoration squad is continuously repainting and repairing.

BBC: Beijing's once Forbidden City