Beijing's bus stops have recently had their old-fashioned information panels replaced with digital billboard screens. We take a look at the steps necessary in building a smart city. / Online literature is attracting older readers. From domineering millionaires to spoiled wives, war gods to ancient concubines - readers over 50 in China have found a new smartphone hobby. / Heart to Heart - please send your audio questions to ezfmroundtable@foxmail.com.