Jiming Temple – "One of the best places to see cherry blossoms is the historic Jiming Temple and the Examination Hall, which was built during the Minguo (Republic of China) era," says Sun.
Nanjing Forestry University, Xuewu Lake and Lovers' Garden are other good places to see cherry blossoms.
Chinese romanticism – "People living in Nanjing, like me, are all somewhat tainted with the old China's romanticism," says Sun, who works in a foundry by day. "We adore the sunrise and sunset, and are fascinated by the history and stories of the city." Sun describes his favorite photographic theme as humanity.
Nanjing Normal University – "My favorite university campus is Nanjing Normal University," says Sun. "The buildings are a blend of East and West, and aesthetically symmetric. It's prettiest in autumn, when the golden ginkgo leaves make it even more eye-catching."
Big sports – The Nanjing Sport Institute is the largest athletic training facility in Jiangsu province.
Minguo architecture – Elegant Minguo-style buildings (pre-1949) are a signature of Nanjing.
"The neighborhoods around Yihe Road and Meiyuan New Village Memorial Hall both have condensed collections of Minguo architecture, but those on Yihe Road are more well-preserved," says Sun. "I take pictures of Minguo buildings (in the Yihe Road neighborhood) on top of a commercial building as well as a nearby hospital. Neither are open to the public, but I was finally allowed in after some long discussions."
More Minguo – Built in 1918, the former Jiangsu postal management bureau is one of the best preserved buildings in the city. It's another Minguo relic.
Top panoramic view – "This photo was taken from the Purple Mountain Observatory," says Sun. "A huge rock atop the mountain provides the best panoramic view of the lake. I hike up here a few times every summer -- it's the best season to take pictures from this spot."
Zhongshan Mountain National Park – Photographing the massive landmarks inside Zhongshan Mountain National Park is a challenge.
"It's difficult to capture the greatness of the attractions in a photo," says Sun. "The best way to do so is to find something iconic in the foreground so the picture doesn't end up looking too empty."
Zhongshan Mountain National Park on Purple Mountain consists of major attractions, including Zhongshan Ling (Sun Yat-sen Mausoleum), Ming Xiaoling Mausoleum and Linggu Temple.
Stone Elephant Road – Sun's favorite place to linger on the mountain is Stone Elephant Road in front of Ming Xiaoling Mausoleum.
"Stone sculptures made from the Ming Dynasty are picturesque but irregularly placed along a line of colorful trees," says Sun. "It's especially beautiful in autumn."
Ming City Wall – If you aren't heading to the Plum Blossom Hill for winter shots, Ming City Wall is another photogenic spot, according to Sun.
"Climb up the Ming City Wall near Jiefangmen and you have a good view of Xuewu Lake and Jiming Temple as well as the wall itself."
Qixia Temple – Sun says autumn is the best season in Nanjing.
"After an autumn shower, the fallen leaves on the road will often surprise you," he says. "The best autumn views have to be those in the eastern suburb."
Qixia Temple (pictured) on Qixia Hill is one of the most important Buddhist temples in China.
Wall and tower – Built in the 1930s, the Ming City Wall (right) is the best preserved city wall in China. The 89-story Zifeng Tower (left) is the tallest structure in Nanjing.
Making his own luck – "I've lost count of the visits I've paid to Jiming Temple," says Sun. "I visit the temple hoping to run into a good photographic opportunity."
Religious ritual – Sun captured these devotees during a ceremony in Jiming Temple.