Who is the author of "Cangshan ink-free Millennium painting, Erhai string-free painting"

There is a poem in A Dream of Red Mansions written by Cao Xueqin, a poet in Qing Dynasty: "Green hills are painted without ink for a thousand years, while green waters are painted without strings." The original author of this poem has two opinions: one is Liang Zhangju, whose works are contained in the Story of Returning to the Field and Couplets in the fourth year of Xianfeng (1854), Volume 7; The second is Zhang Weiping, who wrote in 1829's Essays on Selected Songs: "Occasionally, it is an antithesis, and the' green hills don't draw for a thousand years, and green waters have no strings' is the horizontal comment. There is no author yet, and I don't know whether it is a palindrome or a palindrome. "