For example, when Wu Peifu defeated the army of Marshal Zhang Zuolin, the "Old Marshal" of Manchuria, he provided two trains to take his defeated enemies home, knowing that if in the future Zhang were to defeat him, he could count on the same courtesy.
Misalnya, ketika Wu Peifu mengalahkan tentara Marsekal Zhang Zuolin, "Marsekal Tua" Manchuria, ia menyediakan dua kereta untuk membawa pulang musuh-musuh kekalahannya, mengetahui bahwa jika di masa depan Zhang akan mengalahkannya, ia dapat mengandalkan kesopanan yang sama.