If Elder Huo had not protected An Lan in the beginning, her life in the Huo Family would have been unimaginable. Even though Sun Lanfang showed her true colors after Elder Huo's death, she still had some concerns, as An Lan had already married Huo Zhanting and couldn't treat her too harshly in front of him.
When Huo Zhanting learned that An Lan's sorrow was due to this reason, he felt helpless but even more so, he was moved. He realized that after his grandfather's death, he indeed hadn't taken An Lan for a long time to offer incense in front of grandfather's tablet.
Now that An Lan was pregnant, it was certainly appropriate to go in front of grandfather's spirit tablet to offer incense and share the joyous news with him.
