Photo taken on July 5, 2015 shows the Lugou Bridge, the site of the old photo in the picture, in Beijing, capital of China. A journalist visited the sites of some old photos about the July 7 Incident. The July 7 Incident, or the Lugouqiao Incident, in 1937 marked the beginning of China's War of Resistance Against ese Aggression, which lasted eight years. Photo: Xinhua

Photo taken on July 5, 2015 shows the Wanping City, the site of the old photo in the picture, near the Lugou Bridge in Beijing, capital of China. A journalist visited the sites of some old photos about the July 7 Incident. The July 7 Incident, or the Lugouqiao Incident, in 1937 marked the beginning of China's War of Resistance Against Japanese Aggression, which lasted eight years. Photo: Xinhua

Photo taken on July 5, 2015 shows the Lugou Bridge, the site of the old photo in the picture, in Beijing, capital of China. A journalist visited the sites of some old photos about the July 7 Incident. The July 7 Incident, or the Lugouqiao Incident, in 1937 marked the beginning of China's War of Resistance Against Japanese Aggression, which lasted eight years. Photo: Xinhua

Photo taken on July 5, 2015 shows the Wanping City, the site of the old photo in the picture, near the Lugou Bridge in Beijing, capital of China. A journalist visited the sites of some old photos about the July 7 Incident. The July 7 Incident, or the Lugouqiao Incident, in 1937 marked the beginning of China's War of Resistance Against Japanese Aggression, which lasted eight years. Photo: Xinhua

Photo taken on July 5, 2015 shows the Lugou Bridge, the site of the old photo in the picture, in Beijing, capital of China. A journalist visited the sites of some old photos about the July 7 Incident. The July 7 Incident, or the Lugouqiao Incident, in 1937 marked the beginning of China's War of Resistance Against Japanese Aggression, which lasted eight years. Photo: Xinhua

Photo taken on July 5, 2015 shows the Wanping City, the site of the old photo in the picture, near the Lugou Bridge in Beijing, capital of China. A journalist visited the sites of some old photos about the July 7 Incident. The July 7 Incident, or the Lugouqiao Incident, in 1937 marked the beginning of China's War of Resistance Against Japanese Aggression, which lasted eight years. Photo: Xinhua

Photo taken on July 5, 2015 shows the Lugou Bridge, the site of the old photo in the picture, in Beijing, capital of China. A journalist visited the sites of some old photos about the July 7 Incident. The July 7 Incident, or the Lugouqiao Incident, in 1937 marked the beginning of China's War of Resistance Against Japanese Aggression, which lasted eight years. Photo: Xinhua