What weather? Beijing May 14-18, going sth and west includes Kunming leaving Shanghai June 10

During that period of May, the temperature in BJ is 59 F to 83 F. T-shirts and jeans are enough for you to take;
about the weather in Kunming, the average temperature of May is 61F to 81F. The climate is cool and comfortable.

In June, the temperature in Shanghai will be 72F to 81F. You can bring your summer clothes. In addition, it may rains in the beginning of June. So remember to bring the rain gear.

Thanks