Chen Cang spoke while performing the surgery, trying his best to make He Zhengzhi understand more, and he explained in detail.
"Here, the distal end of the duodenum does not have abundant blood supply, and often does not require hemostasis after resection!"
"The gastric stump has richer blood supply, so you must remember to sequentially incise the anterior and posterior walls of the seromuscular layer at the upper edge of the forceps, and ligate the submucosal vessels!"
Chen Cang was speaking to He Zhengzhi, but actually, he was also speaking to himself.
After all, it was his first time performing this type of surgery, and explaining it to someone else allowed him to identify some issues.
If you cannot explain a surgery clearly, it means there are still blind spots, and these need to be clarified.