Li Lin's four sets of volumes are in the middle of the 2022 postgraduate mathematics line generation problem, all in the middle.

After the national postgraduate entrance examination, some netizens pointed out that there was a "god bet" in postgraduate mathematics, and Li Lin, a "proposition expert" in Nanjing pilot postgraduate entrance examination, "bet" 80%. "Lian Chao's second-order difference has been repeatedly emphasized.