When was fire invented in archeological terms?

(A little difficult to make)Chinese papercutting is a unique artform, since paper was invented in China and has existed there for thousands of years. Common designs are animals, flowers and figures cut with scissors or a knife, mainly made to decorate doors and windows. Papercuttings are also called window flowers or cutting pictures. Papercutting has long history featuring both national and regional themes. It was most popular throughout the Qing Dynasty during which many skills developed, including drafting and the use of smoked paper.