A Tsinghua graduate received four offers:
1. Shenzhen Huawei, monthly salary 37,000, 14 salaries a year;
2. China Southern Power Grid, monthly salary 8,000 (including performance bonus), guaranteed dormitory with one bedroom and one living room;
3. Alibaba, monthly salary 22,000, 16 salaries a year, with some stock options;
4. Selected student, civil servant establishment in a county in Hubei, monthly salary 4,800, full benefits, canteen, basically no other expenses.
What should he choose?