Weather in Lijiang(https://www.travelchinaguide.com/climate/lijiang.htm) may have a temperature if about 0~14C during that day. You need to wear warm clothing.
The most famous shopping center of Lijiang is Square Street, the most bustling area. You can find all kinds of things there. Square Street is also an ideal place for visitors to sample the local snacks.
As to the Indian restaurant, I seldom see, but I know there is Indian restaurant in Lijiang. You can ask for the local people to help you find it.

Actually the Square Street is the place only selling usuless souvenir for tourists. If you want to buy something usuful,go to
the Qixing Jie,where is the local people go for shopping.And go to Fuhui Road to buy Electronics.Unfortunatly,lijiang is not a good place to buy electronic product,most of which are made in Shenzhen,buying in Lijiang always cost more than in coastal area.