Yan Liqiang didn't find anything particularly unacceptable about making a pot of tea for an old eunuch, nor did he find it humiliating. In fact, he had a great mindset toward this.
When he was still a greenhorn in his career back in his previous life, for the sake of forming good relationships with clients to secure a deal, he not only made tea for clients, but also did things like cleaning his client's toilet bowl at their house, fixing the water pipes, and carrying an elderly up the stairs on his back. Not to mention, he also had the experience of visiting places with his things and a smile, but ended up getting thrown out. In comparison to those experiences, making a pot of tea was a mere trifle.
If Eunuch Liu were a client of his, he would definitely be a very important, major client. In reality, Eunuch Liu was not only a major client, but also his superior. This made it even less of an issue for Yan Liqiang.