Is Toona sinensis blanched or cut first, which is less nutritious?

Be sure to cut first, there is less nutrient loss! This is similar to a bag of nutrient solution. You open the bag, boil it in water, and finally take it out. There must be only one bag with an opening. Although the loss of nutrients after cutting Toona sinensis will not be as exaggerated as described, there will definitely be more loss.