Hello I am Ukrainian citizen but now in Kazakhstan, I am planing to go to Shanghai next week

Or there is possible 1) moskov-shanghai then will apply 72 hours rule and return 2) shanghai-pekin-astana

Dear, both of your trip are not eligible for the 72 hour free transit because you stop in two Chinese cities.
But according to the 72 hour policy, you can only transit in ONE Chinese city. So you’d better apply for a transit G type or tourist L type in advance of your trip.

I want to change my trip: 1) ASTANA-SEUL-SHANGHAI then take 144 hours teporary prermit to enter the city and return 2) SHANGHAI-MOSKOW will this work ?