First of all, can tell the color of tea with the new Cha Cha Chen.  The color of green tea green, bright yellow and green liquor color; tea color Zewu Run, liquor color Gong Chen Pan-liang, a sign of the new tea.  Tea in the storage process, the color of tea due to a number of substances, in the light, gas, heat the role, in the slow oxidation or decomposition, such as the green chlorophyll in the decomposition, oxidation, the color green will become dry and dark gray , and Chahe of the increase in the liquor color green will become Malacosoma unclear, the loss of the original fresh color; tea stored a long time and have tea polyphenols in tea oxidation condensation, the color will become dim, Chahe-and the growing number of liquor color will also become stale unclear, it will lose the fresh sense of the new black.
 
Secondly, can be resolved on the new tea aroma and Chen tea.  Scientific analysis shows that the composition of a tea aroma 300 species, mainly alcohols, esters and aldehydes, and other substances.  They tea storage process, both continuous volatile, will slow oxidation.  Thus, with the extension of time, the aroma of tea will be smeared out by the concentration.
 
Third, also from the taste of tea to tell whether the new tea and tea Chen.  Because in the course of storage, and the phenolic compounds in tea, amino acids, vitamins, etc. constitute a taste of the material, and some decomposition of volatile, and some reduction of the substances do not dissolve in water, making tea can be dissolved substances in the taste of the effective reduction.  Therefore, no matter what tea, the taste of tea Almost all the new Xianshuang are mellow, but Chen appears tea anddesalination.