This tandem bicycle

can be ridden face-to-face, conventionally or even back-to-back as the seats rotate and the gears can be set to move the bike in either direction. ‘The bicycle is very easy to change. Any person can change the riding mode in around 10 seconds without the help of tools,’ says Chen. ‘Face-to-face is suitable for a parent and child, or dating couples, while the back-to-back mode gives both riders a good view, and the one at the back can have both hands free to shoot pictures or eat snacks.