What does it mean for a female colleague to read novels if my money can't be spent by him?

Female colleagues read novels. If your money can't be spent by her, it means that she especially likes reading novels. If you have money that can't be spent, she can spend it on books.

I can see that your colleagues have a good relationship with you, so this is obviously a joke, deliberately teasing you. If you really buy her a novel, she may not accept it, because I have had such a similar experience myself.

When I was in high school, because I studied well and was handsome, many female students were willing to play with me, so they would often play jokes on me.

A female classmate named Lin told me that she had no shoes to wear and wanted me to buy her a pair of shoes. I really bought a pair for her online, but she smiled awkwardly and said to me, "I'm just joking with you. Why do you take it seriously?" Haha, I'm a little at a loss, too.

So back to the above topic, the female colleague should be joking with you when she tells you this, so don't take it seriously, but if she really buys it for her, she will be very happy and satisfied.