演示文稿1.pptxpage1Unit 5 SectionBBeauty in Common Thingspage2Chinese four great inventionsteasilkthe Great Wallpage3sky lanternsThey are made of bamboo and covered with paper.They were used for asking for help when in trouble.They are used at festivals and other celebrations.When the lanterns are lit, they slowly rise into the air like small hot-air balloons for all to see.They are seen as bright symbols of happiness and good wishes.page4sky lanternsThey are made ofThey ..