Senior residents pose for a photo with bougainvillea exhibits after dancing and doing other exercises in Lianhua Hill Park yesterday morning. More than 120 species of bougainvillea are being exhibited in the park where the 20th Bougainvillea Show kicked off over the weekend. The show is one of the mroe than 180 activities held during Shenzhen Park Culture Season across the city through Dec. 16.  Sun Yuchen