Hi, I land in Guilin late on the 17th May and unfortunately have only full two days to discover Guilin and Yangshou. I fully intend to do the Li River cruise and try and take in Yangshou on day one but on day two I'm not sure what to try pack in around Guilin as there as so many sights to see. Would it be possible to also visit Longji on my second day, how long does a return bus take?