If you were to invent a self-cleaning textile, the world may want to beat a path to your door to acquire some from you, but first of all they will have to be aware that the textile exists, that it is available for purchase, and they have to know where your door is. This requires advertising.
Chinese Lunar Calendar
Prior to their adoption of the Western solar calendar scheme, the Chinese almost wholly followed their own lunar calendar for determining the times of planting and harvesting and festival days. Although people in China today use the Western calendar for almost all business, governmental and practical matters of daily life, the old method still serves as the basis for determining many seasonal holidays. This coexistence of two calendar schemes has long been accepted by the people of China.
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