Hi there! I already bought tickets from Petropavlovsk-Kamtchatskiy to Beijing (thru Vladivostok).

I will arrive on the 11 of July at 1:10 at night. I will go back to Vladivostok (thru Khabarovsk) on the 13 of July at 2:15 at night. This is less than 72 hours, but I dont know if I made a misstake. It this possible or do I have to go to a another country than Russia after leaving Beijing ?