I am from pakistan..i am going to shenyang aerospace university for study

1. Yes, you can find halal foods in the canteen of the campus. Don't worry.
2. About the weather, this city belongs to the temperate zone.
July is the hottest month of the year with an average temperature of 24.7C. It is much cooler than almost all the cities in southern China.
January is the month with the lowest temperature of the year and has an average of temperature of about -11C, rather cold.
In spring and summer, prepare some light clothes are enough, such as knitted sweater, jackets.
In autumn and winter, you must take heavy clothes to protect against the cold.