Share an effective way to earn 20U every day for free!

First, go buy the first POW inscription IERC-M4 on ETH (Figure 1)

Then stake M4 (Figure 2), put all the staking points you earn every day, this is what I staked yesterday, ranked 56, and got 21000 ETHPI (Figure 3), 20U in hand, so happy.

ETHPI Price (Figure 4)