Regular fixed investment... choose only large-cap index ETFs

I don't have any free money
I'm older too (I'll retire in a few years)
ARK Mudou is too aggressive
The old man's heart is not big enough
I'm afraid to rush with her...
I have to listen to Buffett, the god of stocks
ETF for selected broad-market indices
Regular monthly buy-ins become few and far between
I hope to have a good return when I retire
Just put a little more money in your pocket