
Why can’t he quit? Problems in finding a job? Doesn’t sound that believable. In debt? I thought jobs involving sex usually gets paid high.

Finding a job is tough with that kind of background on your record and even if it wasn't you don't have any beneficial points to get you a good job or job that can guarantee a good life like the one you had before.
Debt is unlikely when it comes to money, it's more like contract. In this industry a good worker is usually forced into a contract because it allows the company to gain profit.
Besides he's probably only getting money off of tips. Paying for the actual service goes to his company. Or at least a percentage of it. Why else would the company keep him if not to profit off of him.

I have a question. I’ve seen people saying about Wei Wuxian and Lan Zhan’s wedding but I’ve already read all the chapters updated in ExiledRebels and have never seen any details regarding a wedding. In the Banquet Extra, there’s a mention that they’re already partners in cultivation. Is the wedding just explained vaguely in the story or is there a separate chapter where it’s not combined with the main story and extras?

yeas in the novel the weeding happen off screen in the story. they do mantion they did all the steps of getting married, but it never show to us the actuall wedding party in the novel. we can only assume they had a party with their friends. but they totally married, since they do all the steps to be married couple. in this story you don't really need a priest to be married XD

The wedding happens off-screen in the novel. It does require some explanation though. In traditional Chinese weddings, the three prostrates are gestured to three different entities. First to the sky and the earth, second to the ancestors (which includes the parents), and third to your partner. WeiYing and LanZhan technically completes the first two at Madame Yu and and Uncle Jiang’s memorial, so they could have very well completed the last part of the ceremony on their own in a very minimalistic way. It’s a little disappointing I know... I actually read a very well written fan fic in the form of an arc regarding what an elaborate ceremony would be like for them just to satisfy that curiosity. It was beautiful btw.
I just checked the season 2 of this manhwa. And did the security department guy have a romantic relationship with Yeo? Or did they just develop a friendship? I mean, I don’t mind either way cuz I quite liked him. He could be a “lil” reliable at some times (shown in 2nd season) and he’s very cute (not the annoying supposedly cute type like the guy who can’t even print properly).