Qi Jiguang, courtesy name Yuanjing, art names Nantang and Mengzhu, posthumous name Wuyi, was a Chinese military general and writer of the Ming dynasty. He is best known for leading the defense on the coastal regions against wokou pirate activities in the 16th century, as well as for the reinforcement of the Great Wall of China. Qi is also known for writing the military manuals Jixiao Xinshu and Lianbing Shiji or Record of Military Training (練兵實紀), which he based on his experience as a martial educator and defensive planner in the Ming military forces. He is regarded as a hero in Chinese culture.

Wokou, which translates to "Japanese pirates", were pirates who raided the coastlines of China and Korea from the 13th century to the 17th century. The wokou were made of various ethnicities of East Asian ancestry, which varied over time and raided the mainland from islands in the Sea of Japan and East China Sea. Wokou activity in Korea declined after the Treaty of Gyehae in 1443 but continued in Ming China and peaked during the Jiajing wokou raids in the mid-16th century. Chinese reprisals and strong clamp-downs on pirates by Japanese authorities saw the wokou disappear by the 17th century.