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For more on London's underground rail network walk out, we are joined by our correspondent Yang Shanshan, who is in London. Hello Yang Shanshan...
Q1. Can you brief us on the latest from the underground rail workers' strike?
Q2. What measures have the government taken to reduce the impact of the strike on commuters?
Q3. What are the reasons behind the strike?
Q4. The 24-hour strike has surely affected people's daily lives. What's the public's reaction to it?