Protagonist: Su Yi, a modern-day veteran web-novel fan, especially obsessed with Battle Through the Heavens. One day, he transmigrates into the talented son of a minor family in the Jia Ma Empire. By a twist of fate, before Xiao Yan and Gu Xun'er have developed deep feelings for each other, he marries Gu Xun'er. His transmigration comes with a God-Tier Sign-In System, which helps him rise rapidly on the Dou Qi Continent.
Gu Xun'er: A heaven-blessed daughter of the Gu Clan, gentle on the outside but strong within, loyal and devoted. Her family arranges for her to grow up in the Xiao family, but she unexpectedly marries Su Yi. From then on, she sets her heart on him and explores the continent at his side.
System: God-Tier Sign-In System. The Host can sign in at specific places and times to receive all kinds of extraordinary rewards, such as top-tier cultivation methods, rare pills, and powerful battle techniques. The more unusual the sign-in location, the greater the rewards. The System also has a quest section. Completing quests grants additional rewards to help the Host grow stronger.
Why does Gu Xun'er want to marry you, and which family is your family? Which of these examples are you talking about? Where are you? You haven't figured this out before you start exploring. You have to first list the characters, locations, times, and events.