Tin cry Tin cry A tin cry is the characteristic sound heard when a bar of tin is bent. Variously described as a "screaming" or "crackling" sound, the effect is caused by the crystal twinning in the metal. The sound is not particularly loud, despite terms like "crying" and "screaming". It is very noticeable when a hot-dip tin coated sheet metal is bent at high speed over rollers during processing. The tin cry is often demonstrated as a simple science experiment. The bar of tin will "cry" repeatedly when bent until it breaks. The experiment can then be recycled by melting and
Chinese pre-wedding customs food, such as peanuts and dates (in Chinese, the word for "date" is a near homonym of "early", while "peanut" is "birth"). This is normally presented on the wedding day, with the wishes of giving birth to a child early in the marriage. Candles and paper cut "Double Happiness" are often seen on a wedding day as well. The bride price, which is given by the groom's family to the bride's family, varies from region to region. In Southern China, the bride price is much higher than in Northern China. After the betrothal gifts and bride price are negotiated and