［1］China's “four great new inventions” in modern times have made the daily life of the public more and more convenient. They are the high-speed railway(HSR), shopping online, shared bikes and mobile phone payment.

    ［2］Living in Hong Kong, I knew them from the papers, the TV and the Internet. But last month I had the chance to experience all of them.

    ［3］As usual, the golden week stopped the traffic. It was hard to get a railway ticket anywhere in the train stations. But I bought a train ticket to Beijing on the Internet and paid for it through Zhifubao. It was even cheaper than it was bought in the station. Then we got on the high-speed train. I was shocked at its speed and quietness. There was no noise which the train made while running. It was reported that China has the longest high-speed railway in the world, which is regarded as a “name card” for China.

    ［4］China's HSR has also gone abroad. In 2014, China finished building its first foreign high-speed rail in Turkey. In June 2015, China and Russia agreed to build the 770 km of high-speed railway connecting Moscow and Kazan. In October 2015, China helped Indonesia to build a high-speed rail between Jakarta and Bandung.

    ［5］Did I feel bored during the trip on the train? Not at all. I bought many cheap and good things in Taobao and Tmall on the Internet through my mobile phone. It's amazing that there are oceans of products in Taobao and Tmall.        ［6］Soon we arrived in Beijing. We got on a bus near the train station.     getting off the bus, my friend told me that the bus stop is far from his home. I thought we would have to spend much money going to his home on a taxi, but it seemed that he wasn't worried about that. He showed me some bikes on the side of the street. They are called shared bikes. We only need to use our mobile phones to scan(扫描) the QuickResponse code(二维码) on shared bikes, then we could ride the bikes anywhere we wanted to go. It was so cool!