The collision-resistant hash function is an early cryptographic primitive that finds extensive use in various applications. Remarkably, the Merkle-Damgård and Merkle tree hash structures possess the collision-resistance preserving property, meaning the hash function remains collision-resistant when the underlying compression function is collision-resistant. This raises the intriguing question of whether reducing the number of underlying compression function calls with the collision-resistance preserving property is possible. In pursuit of addressing these inquiries, we prove that for an ${\ell}n$-to-$sn$-bit collision-resistance preserving hash function designed using $r$ $tn$-to-$n$-bit compression function calls, we must have $r \geq \lceil (\ell-s)/(t-1) \rceil $. Throughout the paper, all operations other than the compression function are assumed to be linear (which we call linear hash mode).