After Jiang Feng had saved his mom, he and Ling Feiyu did not use any protection when they were together.
He estimated the time, and it was probably around the first or second time they were together.
Now that Ling Feiyu was pregnant, he could not stay in the Great World of Tianji for too long. He could only stay for a while. After getting an understanding of what the Great World of Tianji looked like, he would go and accompany Ling Feiyu.
He chatted with Ling Feiyu for quite some time, other than the sweet words between husband and wife, they were mostly discussing what happened in Silvermoon.
For example, the Battle of the Gods.
"Haha! Husband, now that you mention the Battle of the Gods, I really can't stop laughing," Ling Feiyu laughed as if she had thought about something.
When Jiang Feng saw Ling Feiyu's smile, he could imagine the faces of the players from the Divines and Infernals fighting for the Altar of the Gods.