I Only Want to Be a Marriage Alliance Pawn

Blurb:

After transmigrating to the interstellar future, Xia Jiaojiao became an imperial princess. But less than a day after her arrival, a rebellion broke out in the empire. The emperor took his own life, and the other members of the imperial family either fled or were killed. The empire's once-beloved pearl instantly became its lone remnant.

With a keen sense of her own situation, Xia Jiaojiao poured herself a cup of sugar water laced with something and prepared to end her thrilling one-day tour of the interstellar future.

But before she could even swallow the sugar water, a hand in a white glove clamped around her neck, leaving her unable to get it down.

Xia Jiaojiao looked up and thought, Wow, what a beautiful man! Guided by the principle of doing one good deed a day, she was about to ask the beauty what he wanted with her when she noticed a group of maids trembling in fear at his appearance. It turned out that the beauty before her was Reinhardt, the emperor who had overthrown the old empire and founded a new one.

Terrified, Xia Jiaojiao quickly pulled back the tender little paw she'd been about to use to scratch the back of the man's hand, and obediently tried to survive JPG.

For political reasons, on the first day of the new empire, Reinhardt married the old empire's last surviving princess, and they completed their wedding that very day.

Xia Jiaojiao never imagined that she would lose her country on the first day after transmigrating, then get married and experience the great harmony of life for the first time on the second. Fortunately, the day after their wedding, the new emperor set off with his fleet to conquer the sea of stars, and didn't return for three whole years.

Left alone in the capital, Xia Jiaojiao raised the little boy she'd given birth to, spending her days sleeping, shopping, and taking the child out. She was living her dream life and had long since forgotten that she had a troublesome emperor husband waiting for her out there.

A delicate, soft, beautiful, and not-too-bright heroine x a career-focused, aloof hero

A few advance warnings: The hero's intelligence stays intact throughout. The heroine is too lazy to use her brain most of the time. She's not genuinely dumb and naive, but this isn't a strong-woman story. It's a ridiculously sweet romance. If it's not for you, please don't attack it. Let's part on good terms; having fun is what matters most. If you've read less than a third of the book and are already taking things out of context to claim the characters are abnormal, please leave now. That way, everyone can be happy.

Theme: No matter what adversity you face, stay positive and never give up