(By Nie Shengnan)Just before the Chinese Spring Festival 2020, Convid-19 broke out across our country. The government has taken a series of measures to control the spread of the disease, including spring festival holiday extension, increases in the number of inspectors, closure of highways, delay of work and business resumption, quarantine at fixed places and times, etc. These measures are bound to affect the term of work on construction projects. How to calculate the time when the majeure force incident appears and disappears is an issue that the parties involved are very concerned about and is very likely to cause disputes when builder units claim exemption of liabilities based on force majeure clauses.