What is "liangguang"

Liangguang (; , postal: Liangkwang) is a Chinese term for the province of Guangdong and former province and present autonomous region of Guangxi, collectively. It particularly refers to the viceroyalty of Liangguang under the Qing dynasty, when the territory was considered to include Hainan and the leased territories of British Hong Kong, the French Kouang-Tchéou-Wan and Portuguese Macau. The Viceroy of Liangguang existed from 1735-1911.