This book is regarded as one of the basic historical sources about Mongol invasions of Japan.
The day is the 660th anniversary of the start of the "Brief Diary in 1281".
In the North Atlantic, German battleship Bismarck sinks battlecruiser HMS Hood, killing all but 3 crewmen from a total of 1,418 aboard the pride of the Royal Navy.
It is the enforcement of the Neo-Confucianism of Zhu Xi as the official Confucian philosophy of Japan.
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