Expected to enter date Vs date of issue

We will do overLand trip from kUala lumpur-hanoi to kunming -7kuala lumpur 27jan-7Feb. I fill the the form for expexted enter china on 1Feb from hanoi.. But our excatly hotel booking is 4feb.. Becau we just sleep in bus and train to Lijiang grom Kunming town (backpackers)..but the officer delete 1feb then change to 4feb in expected date enter because of the valid booking hotel attached.. Do you think will have problem later to cross border.. I'm worry..