After 38 years of a fruitful sister-state relationship, Maryland and Anhui province are finding a whole new chemistry. The opening of Maryland-Anhui Promotion Week was announced in Rockville on Tuesday. The promotion, to be held May 29 to June 1, presents the artistic and cultural heritage of Anhui, as well as business opportunities between Anhui and Maryland. The Maryland Sister States Program was established in 1980 and currently includes 19 relationships with 17 countries, the Anhui link being the first. Maryland-Anhui Promotion Week is the outcome of a meeting between Governor Larry Hogan and Anhui Party Secretary Li Jinbin last summer.