Ruyi Fang Fei Furong Country blocked the sword for Wang Su. What happened?

"Ruyi Fang Fei" Furong blocked Wang Su's sword because Wang An stabbed Wang Su with a poisonous arrow. Furong stood in front of Wang Su to protect him. King An sent assassins to assassinate Queen Su, and also bewitched the emperor to let Fu Rong be buried with him. In the process of burial, he robbed Fu Rong and hid in his secret room. King Su did not die, but also found Wang An and Fu Rong. When An Wang tried to kill Su Wang, Furong stood in front of Su Wang.

In the process of sending Wang Su to the pro-team, Wang sent many assassins to assassinate each other, and Wang Su was thus plunged into the deep pool. After that, everyone thought that King Su was dead, and even the emperor was ready to set up a cenotaph and bury his son in the imperial tomb. Encouraged by King An, the emperor decided to let Fu Rong bury his son.

Because Wang Su died, Fu Rong didn't want to continue to live, so he chose to be buried with him when he had a book. In the process of burial, Wang designed and replaced the coffin containing Fu Rong, and took Fu Rong to his own secret room. After Wang Su survived, he returned home, only to find that Furong had gone to the imperial tomb to offer sacrifices to himself. When I arrived at the imperial tomb, I found that there was no Fu Rong in the coffin. Seeing this, he immediately knew that Wang An had hidden Fu Rong.

After King Su came to the secret room of King An, he soon met King An and fought with each other. Just as King An allowed a spare poisonous sword to stab Su Wang, Fu Rong suddenly appeared and stood in front of Su Wang. Wang An thought that Fu Rong was dead, so he committed suicide to apologize.

But in the end, Fu Rong didn't die, because when he made soft armor for Wang Su, he also made one for himself, so the poison didn't enter the heart, just entered the skin and let her fake death.