Zhang has made relentless efforts to create innovative works. He has developed a writing style that integrates various elements and even used two pens to write to produce special effects, Meng said.

"Zhang's calligraphy features great artistic tension and thriving vitality. He is like a chivalrous expert who can use the tools of his trade to hack, stab, twist and kill," said Gao Hongjun, a member of the China Calligraphers Association.

Zhang's works appeal to both refined and popular tastes. He adheres to traditional calligraphy basics but never stays in the box, Gao said, adding that he integrated his personal growth with the development of the calligraphy cause.

"In addition to art creation, exhibition, publication and teaching, Zhang has made donations to establish schools and calligraphy museums to increase calligraphy's appeal and social influence," Gao said.

Zhang has held several calligraphy activities in Henan and contributed widely to the development of the art form in the province.

He carried out a series of reform measures to improve calligraphy activity organization and held calligraphy competitions to boost the development of the art nationwide, according to Gao.