中国基督教
In 1843, King Louis Philippe sent Lagrené to China with the title "of Envoy extraordinary" and Minister Plenipotentiary "of" France. He was sent with the aim of concluding a commercial treaty to secure the same privileges as the Sino-British Treaty of Nanking. On 24 October 1844, Lagrené and Qiying concluded the Treaty of Whampoa, which legalized the practice of Christianity in China and opened the way for missionary activities.