Then mount a new extending sub-frame to your bike's seat post and rear wheel dropouts, without need of any welding or further frame adaptation. The subframe can hold a box with a capacity of about 120 litres, without unduly affecting ride performance.sing the same principle of a spacious plywood box mounted on the front of the bike with an inherent low centre of gravity. All manner of accessories like weather covers and seats are available to extend further the usefulness of such bikes.
Shanghai has a humid subtropical climate with four distinct seasons. Winters arecold and temperatures sometimes drop below zero. Snow seldom falls. Incontrast, summers tend to be hot and humid. The annual precipitation is 1,200 mm (47 inches).hen travelingin Shanghai during these periods, prepare your umbrellas or raincoats. The temperatures are not extreme. The hottest month is July, with an average high of 32 Â°C (90 Â°F).The coldest month is January, with an average low of 1 Â°C (34 Â°F).
The population of Shanghai is now estimated at 23.9 million in 2013, up from its 2012 population of 23,710,000.