There are numerous structures in your spine that can cause neck and/or shoulder pain. The facet joints are a frequent cause of neck pain. They are highly innervated with little nerves whose sole job is to provide sensation from them. These are the joints in your spine that allow you to twist and bend forward, backward and sideways. They take a lot of stress and loading over the course of our lives.
Types of Chinese characters. Traditionally Chinese characters are divided into six categories (å­æ¸ liÃ¹shÅ« Six Writings). This classification is often attributed to Xu Shen's second century dictionary Shuowen Jiezi, but it has been dated earlier. This page shows four of those categories.
Nearly 1.2 billion people (around 16% of the world's population) speak some form of Chinese as their first language. The varieties of Chinese are usually described by native speakers as dialects of a single Chinese language, but linguists note that they are as diverse as a language family.