Though one thing is sure that China was able to control the virus very quickly as compared to all other nations. Now what strategy did they use it to curb is interesting to know. When all countries are struggling and each day the cases are rising, China doing so well. Either they have found the vaccine, so they are able to control it or else they are maintaining proper protocol and still people are very cautious and flowing all the government rules and thus it is not spreading.
If you notice all dictatorship kind of countries are controlling spread of virus more effectively compared to how republic counties are doing. Most middle east counties, North Korea and China are good example here. This is simply because of strict law enforcement. When there is a breach of law about lockdown restrictions, and if the punishments are too severe then definitely people will make their lockdown the most successful one. This is what exactly happened in China.
All other counties are really struggling in controlling spread of virus because they value people's basic rights. But, people go for life's essential needs and pick up virus spread. If governments are able to supply essential things at door steps at least for 15 to 20 days then they could contain the spread of covid18 somehow.