Okay, so 'The Richest Poor' is one of those webnovels that got really popular on a bunch of Indonesian translation sites last year, if I'm remembering right. It's originally Chinese, right? The thing is, it's a licensed translation, which makes finding a solid free spot kinda tricky.
Most of the sites that have the full thing free are the aggregator types that just rip the translation from the official app. They're filled with pop-up ads and the chapters sometimes get uploaded out of order. I tried reading on one of those and the experience was miserable—constant redirects, and half the time the next chapter link was broken.
Your best bet for a free, clean read might actually be the official app, Webnovel. They usually let you unlock a certain number of free chapters per day with their daily check-in system or by watching ads. You won't get the whole book instantly, but it's a legal way to read without paying upfront, and the translation quality is consistent. I gave up on the sketchy sites and just read it slowly there over a couple of weeks.
Some aggregators might have a complete mirror, but I wouldn't trust the site security.