大家可曾想過， 我們的老祖宗是如何用自己的雙手和智慧, 在那個沒有現代機械和科技的時代，古代人是怎麽創造出這些宏偉的城牆建築嗎？ 他們選擇了哪些神奇的建築材料？ 城牆和城池都是如何打造而成的？ 更讓人好奇的是，他們是基於什麼樣的考量， 創造出這麼多獨特的城牆防禦設計和構造呢？

Have you ever thought about it, how did our ancestors use their own hands and wisdom to create these magnificent defense buildings in the era without modern machinery and technology? What amazing building materials did they choose? How were these buildings built? What is even more curious is, what kind of considerations did they take when creating so many unique defense building designs and structures?

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