Every issue, ChinAfrica briefs readers on two major Chinese cities and their Africansister cities. Covered this month are Harbin and Lanzhou, the capital cities ofHeilongjiang Province and Gansu Province, respectively. Harbin is matched withEkurhuleni in South Africas Gauteng Province, while Lanzhou is partnered with thecapital and the economic center of Mauritania, Nouakchott.