Why is the hotel called "Ji"?

Because this is a family business:

A hotel, or hotel, is a place that mainly provides short-term accommodation for tourists. In addition to providing accommodation, hotels usually also provide Guests are provided with services such as restaurants, swimming pools or child care. Some hotels also provide conference facilities to attract business organizations to hold events such as meetings, interviews or press conferences. The hotel's banquet halls can hold events such as weddings and dances.

Chapter 43 of "Water Margin": When "Li Kui" walked to Sipai, he felt hungry and thirsty. There were mountain paths and trails in all directions, but there was no hotel or restaurant in sight. Chapter 24 of "The Strange Situation I've Witnessed for Twenty Years", because all I have is this sum of money. If I don't take it out, I won't be able to pay back the money I owe in hotels and restaurants. In Ai Qing's "Street" poem, a tofu shop was transformed into a restaurant, and a grocery store was transformed into a hotel.

Chapter 17 of "The Scholars", there was no convenient boat that day, so I had to stay in the hotel, Bing Xin's "Our Wife's Living Room", as soon as the luggage was left in the hotel, I looked for you everywhere. Today it mostly refers to larger and well-equipped hotels. Ba Jin's "Chinese", our delegation of Chinese writers met with local overseas Chinese at the Xin'anjiang Hotel in Paris.