Time said that Lhasa has 658 brothels on main streets alone. Is there any expert here to prove it is wrong?

Time Magzine, March 2008: LaSha has become "an Eastern Las Vegas, with a population of 300,000 (two-thirds of them Chinese). On the main streets alone, by one Western scholar's count, there are 238 dance halls and
karaoke parlors and 658 brothels, and the Potala Palace (home of nine Dalai Lamas) ... is now mockingly surrounded by an amusement park."