What on earth did I do wrong? The first time receiving the master's anger... It hurts so much I can only keep trembling

Today, as soon as the master walked in, the atmosphere was completely different from usual. He didn't calmly give commands, his eyes were full of irritability and coldness, he didn't say a word and just kicked over

I was terrified, curling up in the corner with my mind going blank.
He seems to have had a rough time at work

When the whip struck my body, that intense pain and coldness made me scream out loud, and I was whipped densely one after another 😭