The study looked at how different hormones in litchi plants change during the process of flower bud formation. They found that certain hormones like IAA, ZRs, and GA are higher when the buds are forming, while ABA is also present in higher amounts, slowing down stem growth. These hormones work together to switch from stem growth to flower formation. As the flower organs develop, the levels of IAA, ZRs, and GA increase again, while ABA decreases. This shows that the regulation of flower bud and organ development in litchi is not just due to one hormone, but a combination of all hormones working together over time and space.