Challa's early poems were written in Romanian and contained symbolism, which he himself felt was "too gentle and sweet." In 1916 he wrote the first work of Dadaism, "Monsieur Antipilina's First Adventure in Paradise". In 1931, "Approximate People" came out. This collection of poems was a watershed in Chala's poetry creation. Before that, most of his poems described human subconscious activities, emphasizing instant impressions, with weird and complex images, unrestrained by reason, no punctuation, incoherence, and very difficult to understand. After "Approximate People", although his poems still retained traces of Dadaism, their logic and organization were greatly strengthened, his thinking began to return to normal, and the momentum of his poems became grand and magnificent. During the war, his poems were closer to reality, but he did not simply adapt to current events or illustrate politics. Instead, he used artistic images from heaven or earth to painfully meditate on the poet's past and the fate of mankind. He republished his Dadaist works, affirmed his early explorations, and continued to work hard to liberate the imagination and oppose the rigidity of poetic language.