may i know the weather end January 28 to feb 2 in lijiang, good to travel ?

Hi, it will still be a little cold then. The average temperature will be 7-8C and the lowest temperature may fall to around 0C. Thus you may need to take along down jacket and sweater.
At that time, the recommended attraction is Lugu Lake, which may leave you great impression.
In general, you can travel then, but it is not the best travel season.