Complex sentence: Tour saw them perform to over a million people, with Roxette becoming the first western act since Wham! in 1985 to stage a concert in communist China, performing to over 15,000 people at the Workers Indoor Arena.
Split into simpler sentences: Tour saw them perform to over a million people. Roxette became the first western act since Wham! in 1985 to stage a concert in communist China, performing to over 15,000 people at the Workers Indoor Arena.