Okay, allow me to speak the truth.
If it's military history:
1. Mongolians
2. Turks
3. Japanese
4. Manchus
5. China
6. Tibetan
Turks are mixture of Asian and Caucasian. The Xiongnu, Avars, Timurlane, Mughals, Huns, Seljuks, Gokturks, Uyghurs were all half asian empires that conquered from europe, middle east, south Asia many times. Mongolians did the same thing. Now Chinese military history was only great from Han dynasty to Tang dynasty, and even Tang dynasty but ever since that they degraded horribly, even the Tang emperors had more Xianbei blood than Han, but they were sincizied and idendified as Han due to their paternal ancestry was Han Chinese. But even than their military expansion could never exceed any Altaic military conquerors, despite having 100x the population. They were easily conquered by nomadic altaic people.
If it's Ancient civilization and Invention
1. China
2. Uzbekistan ( <--- During the rule of the genius Ulugh Beg, Uzbekistan became the centre of islam civilization)
3. Cambodian
4. Japan
5. Korea
China dominated the world culturally, they were richest nation in world for 2000 years. Japan and Korea were greatly influenced by China. There civilizations were not so great, but they had many great architecture and culture. Uzbekistan is mixture of Caucasian and Asian, but the ruler Ulugh Beg looks 100% Mongoloid, compared with the average Uzbeks, he turned Uzbekistan into a world centre of islamic civilization, he was an mathematics and military genius. Cambodians had rich civilization are mostly genetically related with Thai, but some of them have Indian admixture as-well.
But that' the past, we should be focusing now and only NOW. Japan qualifies being 1st in almost everything. Good reputation in almost every country, large cultural influence and music influence, good image everywhere, won the football Asia cup 4 times and 1 world cup once. Manga, Anime, Karate, Aikido, Judo, Ninjitsu, Japanese advanced technology and products, one of world largest economy aswell. Who else can take the 1st spot apart from Japan today? there's no way in hell China will take the first sport, it may have an superpower economy and military today but's it's reputation is about as bad as Afghanistan.