Digital trademarks refer to trademarks composed of Arabic numerals, Roman numerals or Chinese uppercase numerals. Digital trademarks are easily confused with the models of goods (services) and will be subject to certain restrictions when applying for registration. However, there are also some numbers that have gained high significance and popularity due to long-term use, and were finally accepted for registration, such as the "999" Ganmaoling that is often embedded in soft advertisements in variety shows.