If the village-level basketball event is successfully upgraded to a national-level event, it may have a positive impact on the sports development of all provinces. The following are some possible impacts:

1. Enhance the popularity of basketball: hold national competitions to improve the popularity and reputation of basketball in society. This may stimulate more people's interest in basketball and encourage more people to participate in basketball, thus promoting the development of sports.

2. Training talents: The national competition will attract more potential and talented basketball players to participate in the competition and improve the training level of basketball talents. This will help to dig up and train more excellent basketball players and provide more talent resources for the national team and professional basketball.

3. Increase investment in sports facilities: With the holding of national competitions, it may be necessary to strengthen the construction and improvement of sports facilities to meet the needs of competitions. This will drive the provinces to invest in sports facilities, improve and expand the infrastructure such as stadiums and training venues, and provide better venue conditions for sports enthusiasts.

4. Strengthen the development of local economy: Holding national sports events will attract more spectators and tourists to watch and travel, thus promoting the development of local hotels, restaurants, transportation and other related industries and promoting the growth of local economy.

5. Strengthen the exchange of sports culture: The holding of national competitions will attract teams and audiences from all provinces and promote the exchange and cooperation of sports culture in various places. This will help to promote and inherit the basketball culture in various places and promote the deepening of sports exchanges and cooperation.

It should be noted that the impact of national sports events on the sports development of various provinces is also affected by other factors, such as government support, sports infrastructure, coaches and so on. In addition to holding national competitions, it is necessary to comprehensively consider and improve various conditions in order to realize the long-term sustainable development of sports.