What’s Wrong with Sending a Little Explosives to Ancient Times?

[A discarded prince from ancient times and a wise, level-headed fake heiress, a link between past and present + stockpiling + famine years + infrastructure] Su Ningning is forced to return to her hometown and inherit her biological parents' corner shop after the real heiress comes back. She discovers that the shop can connect to the ancient world three thousand years in the past. In a year of famine, more than half the people and soldiers have died, and foreign forces are invading. Xiao Yunzhou is exiled to the frontier, just as his entire army is on the brink of annihilation. Then a “deity” sends them water and food. Xiao Yunzhou goes in person to kneel and pray at the site of the miracle. He discovers that he can actually enter the “temple” of the “deity”! Su Ningning asks coolly, “What ethnicity are you?” Xiao Yunzhou's eyes shine with conviction. “We are Han Chinese, a people known for propriety and courtesy. We never seize another nation's territory. Those Japanese pirates are despicable cowards, taking advantage of our weakness to invade our Great Liang's lands. Whoever dares to invade our people, no matter how far away, must be killed!” Su Ningning's anti-Japanese radar goes off at full volume. Outraged, she immediately gets to work! From then on, she begins stockpiling huge quantities of supplies. Food? Sunflower seeds, peanuts, bottled water, beer, soft drinks, and Eight-Treasure Porridge... Every day brings a different surprise. Injuries? Cephalosporins, Yunnan Baiyao... With Chinese and Western medicine combined, there's nothing to worry about. Technology? A set of military manuals and gunpowder recipes. Time to start building infrastructure in the ancient world. In ancient times, she becomes a household-name deity, with the people building temples and offering incense. In the modern world, she sells antiques. She gives the real heiress a taste of face-slapping and becomes the richest woman in the country. Meanwhile, Xiao Yunzhou becomes the deity's chosen representative. With the supplies Su Ningning provides, he crushes the Japanese pirates, brings peace to the realm, deposes the corrupt ruler, eliminates treacherous officials, and ushers in a golden age. When all is settled, Xiao Yunzhou drops to one knee. “I offer you the realm as my betrothal gift. In life and death, I vow to be with you. I will hold your hand and grow old with you.” Su Ningning: “Do you mean to drag a deity down from her altar and plunge into the mortal world together?”