Ancient Chinese civilization grew up along the banks of two rivers around 9000 B.C. By 2000 B.C., rulers had united the lands between these two rivers and taken control of what we now know as China. The oldest Chinese pots were made around 6,000 years ago, and metalwork was developed approximately 4,000 years ago. Bronze casting was the technique used to make tools, pots and ornaments. The Chinese also excelled at carving stone, especially jade. Jade objects were put in tombs as well as silk paintings. Writing developed in China around 1800 B.C. They developed a system of picture symbols that evolved into their writing system. The Chinese discovered a technique for weaving silk into fabric. They kept their process a secret for 3000 years. Art projects to help readers understand the procedures for making Chinese-style objects include making mask with salt dough, a lacquered bowl with newspaper and varnish, a lantern with paper, and a kite. The illustrations are informative, but not inspiring.