It has definitely taken a while but the truth is finally out!
The truth has been leaking over the last several episodes but first Li Geom finds out that he is Dae Jo Young’s son, then Dae JungSang, then Heuk Sudol and finally, Dae Jo Young and his wife, Sukyoung, who was eavesdropping!!
Of course, it ends there with Chulin finally revealing and blurting out the truth to Dae Jo Young.
How did it get to this point? The following is a summary of approximately Episode 110 to 115.
First Li Kaigu attacks DJY’s Ansi fort. Xue Rengui had prodded them to do so. Meanwhile Xue Rengui teams up with the Turks led by Mucho and has them attack Youngzhou while Li Kaigu was away.
When Li Kaigu hears this, he quickly turns around to go home and fight for his country.
But DJY is no longer a mister nice guy. I love this! He decides to go after Li Kaigu. Hey, Li Kaigu cannot come and go as he pleases.
So they ambushed Li Kaigu. DJY fights him and injured him significantly.
Ugly face Shin Hong rescues his master but the damage is done. They are trapped between a rock and a hard place.
Yingzhou falls to the Turks but not before Dae Jung Sang, Gulsabiwu and Geumlan rescues the refugees stuck in Yingzhou and picked up Chulin, Geum and their Khitan citizens along the way.
They tracked back to Ansi fort. Gulsabiwu confronted Chulin one night and threatened to reveal the truth. Chulin threatens him back….though I don’t know what exactly she could do if he reveals the truth.
Dae Jung Sang had saw both of them going into the woods and had followed. He hears the truth.
But he tells Gulsabiwu to shut up and that he, should be the one to tell DJY.
Meanwhile, Li Kaigu, though injured, recovers a little and orders his army to start going back to Yingzhou. As they were on their way, they learn that the Tang army is coming for them.
They found an abandoned fort located in the outskirts of Liaodong (DJY’s territory) and made it theirs.
The Tang army, led by Xue Rengui and Li Wen fights them but couldn’t beat them.
Meanwhile, Li Geom had found out that his father, Li Kaigu, was still alive and leaves Ansi fort to join him.
Mucho and his gang shows up, much to Xue Rengui and Li Wen’s chagrin. They brought the Khitan prisoners they had capture, including the Khitan king, Sun Wanrong.
Sun Wanrong manages to find a Turk soldier who is a Khitan and sends him with a message to Chulin at Ansi fort.
They captured the suspicious messenger at Ansi fort, and this is where Heuk Sudol finds out the truth. He read the letter and confronts Gulsabiwu.
Gulsabiwu takes the letter to Chulin.
Chulin has a decision to make - to tell the truth to Dae Jo Young who is the only person who can fight the Turks and Tang and save her son OR to keep the secret and possibly have her son and husband killed.
She makes her decision….
She meets up with Dae Jo Young in the night. Sukyoung, Dae Jo Young’s wife, hears that Chulin is meeting with Dae Jo Young and follows them. She can somehow hear their conversation even though she appears to be quite far away 
Chulin begs Dae Jo Young to save her son and when he refused, she had no other choice. She reveals the truth and that’s where Episode 115 ends.
to be continued……..
Tags: Dae Jo Young, korean drama