From Razib Khan: https://www.gnxp.com/WordPress/2018/09/29/china-is-what-you-get-if-your-civilization-never-gets-amnesia/
Our own Dark Ages were the period of disunity that spanned the time from the fall of Eastern Han until the Sui reunification. Similar collapses occurred in the West, also with political chaos (the fall of Western Rome), disease epidemics (Justinian Plague, etc.), and domination by nomadic/less-developed tribes (Migration Period/barbarian invasions). But our ancestors kept recording history amid the unrest of the age, unlike the post-Roman Britons whose descendents filled their half-remembered histories with myth (and not only lost money but stopped coining money and largely reverted to barter: http://www.islandguide.co.uk/history/postroman.htm).
Was it cultural or economic conditions that helped preserve Chinese historiography? Also, why was historiography little emphasised in India? Even the Maya recorded more historical detail than the Indians.
How continuous is Chinese culture from the Bronze Age anyways? When was the last time you or I dressed in Shang Dynasty clothing and carried out a human sacrifice? (I won't ask about worshipping Ma Gu.)