Historical places in Shanghai such as Jade Buddha Temple, the Bund and water town of Zhujiajiao are nice choices. If you would to see the water town nearby Suzhou or Hangzhou, it can skip the ones in Shanghai. You can also see the new content in old style building in Xintiandi, City God temple, either. To buy laptop, do it in reliable large digital product malls, such as the Pacific in Xujiahui.