Locals found and fed Choe, but he soon realized he had another fight on his hands after battling the forces of nature; he now had to prove to his rescuers his true identity. "In the Ming era villages in coastal Zhejiang were frequently harassed and pillaged by Wako, or Japanese pirates," Ni says. "Fearing that Choe and his company might be pirates in disguise, the villagers, kind and generous as they were, sent the group off on an overnight journey to the nearest checkpoint - under escort, of course."

For the next month Choe found himself under serious investigation twice more, in Shaoxing, and then in Hangzhou, capital of Zhejiang.

However, judging by his account, the suspicion that surrounded Choe en route to Hangzhou failed to dispel his good spirits or prevent him from soaking up all the sights and sounds of Jiangnan, the most prosperous and cultured part of China. (In his memoir, Choe did not complain of his treatment, only lamenting about the fear and anxiety the Japanese pirates had instilled in the hearts of the locals.)

Between June and November last year, Ni traveled to many of those places, trying to match the world she confronted with Choe's descriptions. Her journey is encapsulated in a 15-minute mini-documentary on view in the exhibition.

"While in Yaozhu, one of Choe's stops, I instantly recognized the pillar-like mountain mentioned in his book. And the water at Daxiba - even after so many years, I could still envision the torrents that the locals tried so hard to tame by building weirs. Moments like these were miraculous, instantly sucking you into a time tunnel. But of course, most places have changed beyond recognition."

In his book, Choe marveled at the abundance and majesty of the natural beauty he came across, from architecture to art. A meticulous chronicler, he appeared alert to any information that might be of the slightest interest to his king, for example, city layout, the construction of dams, waterways and houses.

He was also keen to record more mundane detail, for example giving a head-to-toe description of the various dress styles of the time.

However, it was the cultural life the locals enjoyed that captivated the man who prided himself on being a member of the literati in his native country. "People here make studying their job," he wrote admiringly.