First published by Money Metals here: https://www.moneymetals.com/news/2018/04/30/us-exports-gold-supply-to-china-001467

The U.S. gold exports to Hong Kong surged in February consuming nearly all of the domestic gold mine supply. Not only did gold exports to Hong Kong jump, but total U.S. gold exports also increased 40% from 36.1 metric tons (mt) in January to 50.4 mt in February. The top three countries that received the majority of U.S. gold exports were Hong Kong (15.5 mt), the United Kingdom (12.1 mt) and Switzerland (11.7 mt).