One of the 24 agreements signed between India and China today morning during Prime Minister Narendra Modi's three-day maiden visit to the country is that of exchange of sister cities and province between the two Asiatic giants. Under the agreement, the Sister Cities will be Chennai-Chongqing, Hyderabad-Qingdao and Aurangabad-Dunhuang. Apart from it provincial ties will be established between Karnataka and Sichuan.