An ongoing exhibition showcases paintings, calligraphic pieces and seal impressions by Qi Baishi.[Photo Provided to China Daily]

A letter Xu wrote to Qi in the 1950s exemplifies Xu's thoughtfulness as a young admirer and close friend. The letter was delivered to Qi's home together with a fresh herring and a dozen zongzi (rice dumplings).

In the letter, Xu told Qi not to take off the fish scales because they contained oils which were nutritious, and added that the fish tasted most delicious when steamed.

When Xu died, Qi was not told about it for fear that the aged artist would not be able to handle the sad news.

Qi learnt of his friend's death a year later when he visited Xu's residence which had by then been transformed into a memorial hall.

It is said that Qi then stood still in front of a photo of Xu, bowed deeply, and said farewell to his friend amid a flood of tears.

If you go

9 am-5 pm, through Sunday. 12 Chaoyang Gongyuan (Park) Nan Lu, Chaoyang district, Beijing. 010-6502-5171.