Rhododendrons trees are in full bloom on Wutong Mountain, Shenzhen’s highest peak. (Inset) A sightseeing helicopter takes off yesterday. A manned sightseeing commercial helicopter flight service was launched yesterday for visitors to appreciate the beauty of Wutong Mountain. The famous scenic spot is entering its spectacular flower-blooming season as the annual Rhododendrons Fair & Wutong Mountain Music Festival approaches.