In the face of other countries' friendship, Ye Jian appeared natural and unrestrained. She used fluent American English to communicate with the American special forces. They were people that China needed to learn from. Even though she was tired, Ye Jian didn't want to miss the opportunity to communicate with them.
Even their spirit was worth learning from. They were like the Chinese soldiers. Everything they did was for their country and their people. Just like the Chinese soldiers, they did their best to protect the interests of their country and the safety of their people.
Hence, why did the Italian commander say that they needed to respect the soldiers of every country? Even if they were enemies, as soldiers, they needed to respect the soldiers of other countries.