The most affordable house in Yantai, Shandong, is typically found in the city's suburban areas or in newly developed districts. These areas offer more affordable housing options due to lower land costs and less demand. According to a report by the China Real Estate Association, the average price per square meter in Yantai's city center is around 10,000-12,000 RMB, whereas in the suburbs, it can be as low as 6,000-8,000 RMB. This significant price difference is primarily due to the lower cost of living and infrastructure development in these areas.

The city's government has also been actively promoting affordable housing initiatives. For instance, the "Public Rental Housing" program provides low-income families with access to affordable apartments. Additionally, the government has allocated funds for the construction of "Economic Housing" units, which are designed for middle-income earners. These initiatives have helped to increase the availability of affordable housing in Yantai.

Another factor contributing to the affordability of housing in Yantai is the city's relatively low cost of living compared to other major Chinese cities. The cost of groceries, transportation, and utilities is generally lower in Yantai, which makes it easier for residents to manage their housing expenses. According to a survey by the China Household Finance Survey, the average monthly living expenses in Yantai are around 3,000-4,000 RMB, which is significantly lower than the national average.

In conclusion, the most affordable houses in Yantai, Shandong, can be found in the city's suburban areas and newly developed districts. The government's affordable housing initiatives and the city's lower cost of living have made it possible for a wider range of residents to own or rent homes within their budget.