Was china not a super power in early medi times?

中國在中世紀(jì)早期不是超級(jí)大國嗎?



Today i had an discussion in class about the worlds greatest power over time.And when we riched the period after Rome's fall to the visigoths we disagreed about what was the world top superpower then.
Long story short we decided it was the E.R.E And i couldnt help but wonder why it wasnt China (the teacher didnt have time to answer it).Can somebody please tell me why Byzantium was considered superior to china at that time (5th century to 11th century)?

今天我在課堂上討論了隨著時(shí)間的推移世界上最強(qiáng)大的力量。當(dāng)我們說到在羅馬倒臺(tái)后的那段時(shí)間里時(shí),我們對(duì)當(dāng)時(shí)的世界頂級(jí)超級(jí)大國有不同的看法。
長話短說,我們決定當(dāng)時(shí)的超級(jí)大國是E.R.E(東羅馬/拜占庭帝國),我不禁想知道為什么不是中國(老師沒有時(shí)間回答)。有人能告訴我為什么拜占庭在當(dāng)時(shí)(5世紀(jì)到11世紀(jì))被認(rèn)為優(yōu)于中國嗎?