专访周小川; 央行行长周小川谈人民币汇率改革、宏观审慎政策框架和数字货币. 财新周刊, 2016年第6期 出版日期 2016年02月15日 (Google: online '3 days ago') http://weekly.caixin.com/2016-02-12/100908570.html
("周小川: ' * * * 随着资本的进出,外汇储备现在减少,过一段也可能增加,只要基本面没有问题,增增减减本身都是正常的。"
(c) However, I question why the quotations in the BBC somehow and somewhat deviated from the original (as well as the report in China News, which is identical to Caixin's).