![A passenger takes photos of a China-Belgium theme train of Shanghai Metro Line 2 bearing character images from Belgian comic \](http://www.ecns.cn/hd/2018/10/22/b9cb1699d9b44c0882ba647c593b0c25.jpg)
A passenger takes photos of a China-Belgium theme train of Shanghai Metro Line 2 bearing character images from Belgian comic "The Smurfs" in east China's Shanghai, Oct. 20, 2018. The theme train was launched by Shanghai Metro on Saturday as a special service to mark the upcoming China International Import Expo. (Xinhua/Fang Zhe)
![Passengers get off a China-Belgium theme train of Shanghai Metro Line 2 bearing a character image from Belgian comic \](http://www.ecns.cn/hd/2018/10/22/4943fe59dd68498e91f6872877e2c6b2.jpg)
Passengers get off a China-Belgium theme train of Shanghai Metro Line 2 bearing a character image from Belgian comic "The Smurfs" in east China's Shanghai, Oct. 20, 2018. The theme train was launched by Shanghai Metro on Saturday as a special service to mark the upcoming China International Import Expo. (Xinhua/Fang Zhe)
![The image of a character from Belgian comic \](http://www.ecns.cn/hd/2018/10/22/e4fcc46e85b442c5a45902d2c2a630e2.jpg)
The image of a character from Belgian comic "The Smurfs" is seen on a China-Belgium theme train of Shanghai Metro Line 2 in east China's Shanghai, Oct. 20, 2018. The theme train was launched by Shanghai Metro on Saturday as a special service to mark the upcoming China International Import Expo. (Xinhua/Fang Zhe)
![The image of a character from Belgian comic \](http://www.ecns.cn/hd/2018/10/22/7c2645b473f34c958fcfcdab544063fc.jpg)
The image of a character from Belgian comic "The Smurfs" is seen on a China-Belgium theme train of Shanghai Metro Line 2 in east China's Shanghai, Oct. 20, 2018. The theme train was launched by Shanghai Metro on Saturday as a special service to mark the upcoming China International Import Expo. (Xinhua/Fang Zhe)