VR historical journey to the age of Crusaders: Medieval Jerusalem, Saracen Cities, Arabic Culture, East Land

The Arab Empire (632-1258) was an Islamic empire established by Arabs in the Middle Ages. Chinese history books since the Tang Dynasty have been called "big food (yì)", while Western Europe is used to call it the Saracen Empire. The Arab Empire has gone through 626 years. There are four major caliphs (632-661) and the Umayyad dynasty (661-750) and the Abbasid dynasty (750-1258). We have…