It's a bit hard to give an exact number. Different publishers and regions might have different counts. But generally, there are a few main series and some spin-offs. You could do some online research to get a clear picture.
I think there are several, but the exact number might change as new ones could be released. You might want to check reliable manga databases or official sources for the most accurate count.
Look to Chapter 239 for the clearest answer. It begins with I can't believe it, I thought the live broadcast was over, but here's a..., keeps building through Now, they have to vote for who transformed the most successfully., and lands on Wen Jiaojiao was happy, but when she saw the total score.
A practical answer is Chapter 195, because it turns the idea into a concrete scene. The chapter opens with Jiang Yan was fully equipped and followed at the end of the team., adds pressure through How, within a sleep, had their base been stolen?!, and ends on The audience and fans would definitely.
Look to Chapter 188 for the clearest answer. It begins with With a "snap," the pencil Jiang Cheng was using to draw broke on the paper., keeps building through He looked up, the cold glint behind his glasses sending shivers down one's..., and lands on I haven't even said anything yet, Zhou, why so.
Look to Chapter 259 for the clearest answer. It begins with While the villagers of Chixia Village were all immersed in the revelry of..., keeps building through The man with the scarred face led the team, constantly remaining highly..., and lands on It wasn't that he was scared..
The best chapter pointer here is Chapter 193, "Do You Really Think the Audience is Blind?". It opens with Jiang Shixu's eyes lit up when he heard there was a gift. and closes on Jiang Cheng was a prime example..
If you want the clearest chapter reference, go to Chapter 207. Early on, After finishing, Sister-in-law Lan quickly took out the Good Evaluation...; later, the chapter leans on Su Yinwan didn't feel anything amiss and shyly lowered her head, fully....
Chapter 234 is the strongest chapter-level answer because it starts from Given the vast mystical powers Jiang Li had displayed before, he was... and follows through on His voice, intermittent and broken, came through the earpiece: "Sorry, my....
Look to Chapter 219 for the clearest answer. It begins with Qi Tianyu was somewhat freaking out., keeps building through The eagerly anticipated bed of roses had turned into pink roses., and lands on Having any yield at all was already the show giving them face..
The best chapter pointer here is Chapter 220, "The program team actually invited such a high-level boss!". It opens with I know everyone has many questions, and I'm here to answer them one by... and closes on However, Su Yinwan and Shang Shaojing weren't particularly attentive to....
The best chapter pointer here is Chapter 230, "To use one's own method against them.". It opens with Shang Shaojing's expression wasn't looking too good either. and closes on If he knew that your stepmother was secretly prompting you towards a....