For a standard tourist visa, passport holders of countries with high GDP will not find applying very difficult. It becomes more challenging when you are applying outside of your home country, want to stay longer, or want to visit restricted areas like Xinjiang or Tibet.
China's visa-free policies allow nationals of certain countries, including the United States, the United Kingdom, Singapore, Australia, and New Zealand to travel to China for stays ranging from 24 hours to 180 days without obtaining a visa if certain requirements are met.
The most popular type of visa for China, the L or tourist visa, is typically the easiest to apply for. You'll need to provide the three standard items (passport, application form, photo), an invitation letter from your host or travel documents (round-trip travel plus hotel booking), and proof of current residency.
Foreigners normally need to obtain a visa for a trip to China before departure, while in certain cases they are likely to get a China visa on arrival at entry ports. The validity counts from the day following your entry and only one entry is allowed. Once you exit from China, the VOA expires.