Looking for inspiration, Ho wandered into a garden and picked up a "Bauhinia blakeana" flower. He observed the symmetry of the five petals, and how their winding pattern conveyed to him a dynamic feeling. This led him to incorporate the flower into the flag to represent Hong Kong. The design was adopted on 4 April 1990 at the Third Session of the Seventh National People's Congress, and the flag was first officially hoisted seconds after midnight on 1 July 1997 in the handover ceremony marking the transfer of sovereignty. It was hoisted together with the national PRC flag, while the Chinese national anthem, "March of the Volunteers", was played. The Union Flag and the colonial Hong Kong flag were lowered seconds before midnight.