从零开始
cóng​líng​kāi​shǐ

to start from scratch

从零开始 從零開始 cóng​líng​kāi​shǐ
to start from scratch verb
To start a task or process from the very beginning without any prior work or advantage.

好消息是，我们并不是从零开始。

hǎo​xiāo​xi shì, wǒ​men bìng​bù​shì cóng​líng​kāi​shǐ.

The good news is that we are not starting from scratch.

to start from zero
To begin a count, a measurement, or a process from the numerical value of zero