China part 2

We drove past the Olympic aquatic center and the birds nest.  They were tough to see despite only being a block or two away.  In the afternoon, the sun is barely distinguishable through the haze.  It's the first time we've been able to look directly at the sun on a cloudless day.  Then on to Xian and the Terra Cotta warriors.  They were built to protect a paranoid emperor's tomb in his afterlife.  Then on to Chongching where we boarded the river cruise ship.