Elsewhere.
After learning that Si Tianque was the son of the Crown Prince, Mother Meng and her husband were so shocked they didn't sleep a wink all night. They had intended to go to the Earl Chengen's Mansion the very next day to ask Meng Yihuan about it, but Mother Meng fell ill, causing a delay. By the fifth day, having fully recovered, she immediately prepared the carriage and headed to the mansion.
Once inside, Mother Meng took Meng Yihuan into a room and closed the door, asking with a mixture of confusion and worry, "Yihuan, what exactly is going on? How did Tianque suddenly become the Crown Prince's son? Is he still my grandson? That child you gave birth to all those years ago..."
Chapter 208