What is the best way to buy and invest passively into Chinese ETFs for the long term?

Fsmone has many ETFs to DCA/RSP monthly- https://secure.fundsupermart.com/fsm/regular-sa... (click on ETF Core Equity or Tactical Plays) :) DCA/RSP is on a fixed date every month but much cheaper than one-time trading fees.

I like HKEX 3010, but it's asia excluding japan (but it includes TSMC) https://secure.fundsupermart.com/fsm/stocks/etf.... You can look at the holdings of each ETF (under different categories e.g. tactical plays, core equity, single market equity etc) and see which companies you prefer as there might be some overlaps in companies for different ETFs..

On the U.S. markets (for 0.00 USD trading fees with TD Ameritrade):

MCHI, PGJ, CXSE

if risk taking is not a problem, then tech/biotech/medtech/pharma:

CQQQ, KWEB, KURE, ChinextETFs, and upcoming KSTR (SSE Star Market 50)

on Hong Kong Market:

HK:3067 the cheapest new Hang Seng TECH ETF

HK:2820​​​