C39 How can they be related?

After Qi Yunxiu left the hotel, he did not go to the banquets at all, but chose to continue working overtime at the company. After going to France for five days, he had accumulated almost 500 sets of documents at the company.

Due to the huge amount of work he had to do, he had long since gotten used to working overtime. The meal from before was set up by the people there