Nanjing is the transportation hub in eastern China and the downstream Yangtze River area. Different means of transportation constitute a three-dimensional transport system that includes land, water and air. As in most other Chinese cities, public transportation is the dominant mode of travel of the majority of the citizens. As of October 2014, Nanjing had five bridges and two tunnels over the Yangtze River, which are tying districts north of the river with the city centre on the south bank.
How many tunnels does Nanjing have over the Yangtze River?
two

The tram system that now criss-crosses the historic city centre complements walking and biking in it. The centre has been transformed into a pedestrian priority zone that enables and invites walking and biking by making these active modes of transport comfortable, safe and enjoyable. These attributes are accomplished by applying the principle of "filtered permeability" to the existing irregular network of streets. It means that the network adaptations favour active transportation and, selectively, "filter out" the car by reducing the number of streets that run through the centre. While certain streets are discontinuous for cars, they connect to a network of pedestrian and bike paths which permeate the entire centre. In addition, these paths go through public squares and open spaces increasing the enjoyment of the trip. This logic of filtering a mode of transport is fully expressed in a comprehensive model for laying out neighbourhoods and districts the Fused Grid.
What is the layout of the neighbourhoods called?
Fused Grid

The name Ashkenazi derives from the biblical figure of Ashkenaz, the first son of Gomer, son of Khaphet, son of Noah, and a Japhetic patriarch in the Table of Nations (Genesis 10). The name of Gomer has often been linked to the ethnonym Cimmerians. Biblical Ashkenaz is usually derived from Assyrian Askuza (cuneiform Askuzai/Iskuzai), a people who expelled the Cimmerians from the Armenian area of the Upper Euphrates, whose name is usually associated with the name of the Scythians. The intrusive n in the Biblical name is likely due to a scribal error confusing a waw with a nun .
The name of Ashkenazi derives from which biblical figure?
Ashkenaz