Lu Ban is honored as the forefather of China's underline(1).His inventions include: the saw, ladder, underline(2), key andunderline(3), and more—alI still used to this day!The “Lu Ban Lock”, a type of mortise and te non joint structure (榫卯结构) without underline(4).Premier Li Keqiang gave a Lu Ban Lock underline(5) to German Chancellor Angela Merkel with underline(6) that the two countries could solve difficultiesunderline(7) and expand their future.

Lu Ban is honored as the forefather of China's $\underline{1}$. His inventions include: the saw, ladder, $\underline{2}$, key and$\underline{3}$, and more—alI still used to this day! The “Lu Ban Lock”, a type of mortise and te non joint structure (榫卯结构) without $\underline{4}$. Premier Li Keqiang gave a Lu Ban Lock $\underline{5}$ to German Chancellor Angela Merkel with $\underline{6}$ that the two countries could solve difficulties$\underline{7}$ and expand their future.