Double stay of 3 and 2 days

I'm from the netherlands and flying to Hangzhou. I will stay 3 days in Hangzhou and then fly to Vietnam. I will back after my 16 day Vietnam holiday in Shanghai. I will stay for 2 days in Shanghai.
So I'll stay in total 5 days in Hangzhou/Shanghai, but I will enter Shanghai/Hangzhou two times. Is "a double" entry possible with the 144-hours free visa transit

Hopefully someone can answer my question. Thanks in advance