三国：冰河时代

1. Choose your warlord, starting province, and early perks to define your strategic identity. 2. Scout the frozen map to reveal resources, relics, and neutral settlements while charting safe supply routes across ice. 3. Build and upgrade cities and outposts, balance heat, food, and materials, and maintain logistics that keep armies effective in storms. 4. Research survival, engineering, and military technologies to unlock formations, siege engines, and weather adaptations. 5. Negotiate treaties, trade, and espionage to sway neighbors, form coalitions, or isolate rivals before decisive campaigns. 6. Command season- and terrain-aware battles, seize choke points and capitals, and win by conquest, alliance hegemony, or wonder projects.