The Flag of Hong Kong features a white, stylised, five-petal Hong Kong orchid tree (Bauhinia blakeana) flower in the centre of a red field. Its design was adopted on 4 April 1990 at the Third Session of the Seventh National People's Congress. The precise use of the flag is regulated by laws passed by the 58th executive meeting of the State Council held in Beijing. The design of the flag is enshrined in Hong Kong's Basic Law, the city's constitutional document, and regulations regarding the use, prohibition of use, desecration, and manufacture of the flag are stated in the Regional Flag and Regional Emblem Ordinance. The flag of Hong Kong was first officially hoisted on 1 July 1997, in the handover ceremony marking the transfer of sovereignty.The design of the flag carries cultural, political, and regional meanings. The colour itself is significant; red is a festive colour for the Chinese people, used to convey a sense of celebration and nationalism. Moreover, the red colour is identical to that used in the national PRC flag, chosen to signify the link re-established between post-colonial Hong Kong and China. The position of red and white on the flag symbolizes the "one country two systems" political principle applied to the region. The stylized rendering of the Bauhinia blakeana flower, a flower discovered in Hong Kong, is meant to serve as a harmonizing symbol for this dichotomy.