Charles Oliveira is used to being the focus of trash talk in MMA, so he doesn't mind what Ilia Topuria has said building up to their lightweight championship fight at UFC 317 in Las Vegas. "Do Bronx," who will try to get back the 155-pound title when he fights the former featherweight champion on June 28, has heard people call him a quitter and say he can't take a punch. He has built a legendary career in the UFC with 20 finishes in 23 octagon victories, and he has won a record 20 bonuses in the company. Topuria has challenged fans to pick how he will stop Oliveira at T-Mobile Arena since the fight was officially confirmed for International Fight Week. He even told Oliveira to "don't forget to bring the pillow" to UFC 317. "I don't want to talk about it because everything we say becomes noise, but I think we're past that now, right?" Oliveira said to MMA Fighting. "It's been 15 years in the UFC." I was a kid when I first went in there. Everything I say means something, right? "I'm just a kid among the lions, and now I feel like a lion among the lions." A different lion, a nasty lion." "Back then, when they believed I was better than them, they said something to try to encourage me to think about it. And I had a group of people with me. The last one said, "Charles quits," so I went there and ran over him. "Charles has no hands," I said as I hit him. I went there and did it, saying "Charles this and that." So many strange things. Oliveira made his UFC debut in 2010, when he was 12-0 as a pro. He quickly submitted Darren Elkins in 41 seconds. He claimed that trash talk wouldn't bother him at the time, but he's always thought it was "unnecessary" to treat another athlete poorly. So, in the end, it only makes him want to win more. "If the plan is to keep talking and wondering if they will get in my head, man..." I just laugh when I see that, you know? Oliveira stated. "These things are so [not important] that while they talk, I'm training and committing. You know me; I'm not the kind of man who needs to keep blogging and chatting. I know what I need to do. I need to stay focused and ready because the battle is on the 28th. I know what I need to do. I have two weeks to get it done. I just have to stay cheerful, be with the people I love, and work hard and give. Oliveira vs. Topuria will be the main event of the International Fight Week card in Las Vegas, one of the biggest events of the year. "Do Bronx" doesn't care if being more vocal will help promote the show and make him more money. Oliveira remarked, "I don't know how to do that, to talk like that." "I don't know how to sell a fight like that." That's not how I promote. So let me keep producing money because that's the only way I know how to do it. I know what I have to do when the cage closes: walk forward, put my hands down, and in the end, what matters most, raise my hand. Topuria fought in the UFC as a lightweight once. He knocked out Jai Herbert in the second round, and then he beat Bryce Mitchell and Josh Emmett to get a title opportunity against Alexander Volkanovski. After knocking out "The Great" and Max Holloway, he goes back to 155 pounds. However, Oliveira knows from experience that gaining 10 pounds and getting used to a new weight class is not simple. Oliveira began his UFC career as a lightweight, but it took him years to reach the 145-pound limit. He was then forced to go back to 155 pounds for permanently. The Brazilian fighter was winning big fights at lightweight, but he still wanted to go back down. He wonders how Topuria will do switching divisions without more time to prepare, and whether he should try to lose weight to make the weight cut easier or gain weight to get stronger. Oliveira stated, "It took me a while to get this, especially since you know I didn't want to go back to the [lightweight] division." "When I went to 155, I could feel the difference in my punching power, grappling, and strength. I understood and moved up for good. I was talking about maybe going to 170 yesterday. The first fight is fine, and the second one is too. After that, you've already put on weight and need to lose more since you want to get stronger, too. I think it's a little hard to say because it depends on the person. Oliveira believes that his height and reach will give him an edge against Topuria, but he won't let that be a big part of the battle because "MMA is very unpredictable." He doesn't say much when asked how he plans to get the job done at UFC 317. Oliveira stated, "We always walk forward, and so do I." "I have a lot of weaponry in my hands, and he hits hard too. We think of this conflict as two guys who only walk forward. I do jiu-jitsu, and he does grappling. He's so sure of himself that he's asking people to choose how it's going to be: he can either knock me out or submit me. But honestly, we're two guys that are going to run into each other, whether we're on the ground or on our feet. I genuinely believe in the firepower I have in my hands. "You've all known me for a long time. You know that things started to work when I stopped worrying about what my opponents could do and only focused on what I could do," he said. "Of course, there's a big team around me. We know he has an aggressive boxing style and delivers two or three punches while walking forward. He's really dangerous; he knocked out Max Holloway in his last bout, therefore he's scary, right? People think his jiu-jitsu is good, but he hasn't used it in the UFC yet. I don't care about anything else; I'm only thinking about what I can offer to the cage and how glad I am to have this chance to make my legacy even bigger.