Pampered Marriage Night Attack: Buy One Cute Wife, Get Two Free

At her Coming of Age Ceremony when she turned eighteen, she accidentally stumbled into his arms and became the midnight gift for the youngest magnate in C city.
They got to know each other inside and out in just one night, and surprisingly, he planted two little buns within her.
After the incident, she ran away, and he turned the world upside down looking for her.
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Years later, he cornered her on the bed, bent over elegantly yet domineeringly, "Miss Yan, could you tell me where your children came from?"
She chuckled, "They were freebies with a phone top-up!"
His eyes darkened, "Very well! Then we will top-up again tonight!"
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After the words, they played rock-paper-scissors, drew lots, topped up the phone, and he planted another little bun within her!