Yes, under outdoor conditions, fully rooted plants prefer full sun. If the plants are not fully rooted, you have to be careful and very slowly acclimate the trees.
For bare root trees from China, they are in a state of shock and should be kept in full shade or morning indirect sun until they root/ leaf out a bit. Once they start growing, you can very gradually increase the light levels.
Keep in mind the article I posted somewhere on this thread that showed photo inhibition beyond a specific light level but the average backyard Yangmei grower shouldn’t concern themselves with this. Commercial growers, wether for fruit or nursery stock, should consider this in their business plan because of the huge multiplier effect when growing out thousands of trees.
A bunch of my original graft experiments that were kept outside through Extreme heat and more recently, through 3 nights of frost have shown little to no damage. I do notice minor damage to newly emerging growth when there is extremely low humidity and high winds such as our Santa Anna wind conditions.


These grafts were neglected and not given any special fertilizers and they grew much slower than my plants which were given my fertilizer but the growth rate was still very good and comparable to ungrafted Californica and Cerifera.
Simon