Blac Chyna threatened to kill RobKardashian multiple times over the phone and in person during the night of their fight.

The first witness to testify in the trial of Blac Chyna was his brother-in-law, who gave an account of the fight that theKardashians say was very violent.

When Kris put the call on speaker, he heard Chyna screaming in the background.

He says that he heard Chyna say to Rob, "I'm a kill you fat mother f*****."

When he saw that it was a volatile situation, he jumped out of bed, got dressed in a hurry, and rushed over to the house of the matriarch of the family, where Rob and Chyna were staying.

The front door of Rob's car was unlocked when he parked behind it. While he went alone, Kris wanted to go as well, but he told her to stay put because he was afraid of the situation.

At the front door, Chyna yelled at Rob, telling him that she hated him and that she would kill him.

rob kardashian blac chyna dream

When he got inside, he saw that she was holding a large rod of some sort in her hand, and she dropped it when he saw him.

Rob was hit on his shoulder by a long phone charging cord that was picked up by Chyna.

He jumped between them to break them apart and was hit in the process. He told the jury that he told Rob to get out because he thought the situation was dangerous.

Rob Kardashian and Blac Chyna -- Happier Times Getty

The jury was told that Chyna took off after Rob tried to leave, but that he stopped her from chasing after him and even tried to hide her keys.

When he realized he had blocked in Rob's car with his own, he went outside to move his whip, but when he did, Chyna jumped back on Rob and continued hitting him.

Chyna tried to grab a small table and throw it at Rob, but he stopped her.

In earlier testimony, Chyna denied threatening to kill Rob or hitting him, and she also denied throwing anything at his car.