Prime Minister Hun Sen and the visiting president of the China-Cambodia Friendship Association (CCFA) each planted a tree inside the Peace Palace compound in Phnom Penh on Wednesday to celebrate the 55th anniversary of diplomatic relations between the two countries. Gu Xiulian, president of the CCFA, planted an Osmanthus Fragrans sapling, the mature version of which has culinary and medicinal value, while Mr. Hun Sen planted a Dalbergia Cochinchinensis, which grows in the wild across Cambodia and is better known as Siamese rosewood.