Many people know that China's Hainan Huanghua pear, India small leaf rosewood these two materials are also belong to the royal palace of the three major tributary wood, but these two materials in the late Qing Dynasty to the early Republic of China appeared fault phenomenon, before the palace inside Huanghua pear furniture, small leaf rosewood furniture were burned and robbed, so in the Republic of China period, People do not even know the high-end materials of Huanghua pear and Indian rosewood, but the material of Laos red sour branch has been used, and even the material of Laos red sour branch during this period has become a recognized good material, which is the achievement of the old mahogany that people say.