A Calamity Star Brings Disaster to the Nation

The Big Dipper has nine stars in all. Seven are visible, while two remain hidden. The eighth star, Dongming, is considered a lucky star. Wherever it goes, prosperity flourishes. As for the ninth star, Yinyuan, a sneeze from him can blow a star from the sky, and a single fall can send the stars flying and bring about a meteor shower. The residence where he lives is always collapsing, the woods he passes through are constantly thrown into chaos, and the rivers, lakes, and seas whose water he drinks are plagued by misfortune. So the Star Emperor, lord of all the stars, entrusted Yinyuan with a special mission. "Yinyuan, Kingdom A has run out of luck, yet it still clings to life. Hurry to the imperial palace and make sure the dynasty changes at the right time." "Yinyuan, Duke Wu of Kingdom B is abducting young men and oppressing the people. Go stay at his estate for two days." "Yinyuan, bandits are running rampant along the northern border of Kingdom C, making life miserable for the common folk. Find out where their hideout is." "Yinyuan, wait. That's the direction of Kingdom D. Its ruler is wise and benevolent, and the kingdom is at the height of its fortunes. You mustn't go there." A calamity star that brings ruin to kingdoms has three signature traits: a terrible sense of direction, stunning looks, and abysmal luck. Premise: