The follow-up focus of Ethereum’s surge will mainly focus on the following aspects:

1. Technology upgrades and Layer 2 development: Ethereum’s continued upgrades and the development of Layer 2 solutions are key factors driving its price increase. These technological advancements can significantly increase transaction speeds and reduce costs, attracting more users and developers to join the Ethereum ecosystem.

2. Market demand and application growth: As more decentralized applications (DApps) and smart contracts are deployed on the Ethereum platform, the market demand for Ethereum will also increase. This increase in demand is a significant factor driving the price of Ethereum.

3. Macroeconomic and market sentiment: As the second largest cryptocurrency, the price of Ethereum is also affected by the overall market sentiment and macroeconomic environment. The performance of other cryptocurrencies such as Bitcoin, as well as global economic conditions, may have an impact on Ethereum prices.

4. Regulatory environment: Changes in regulatory policies have an important impact on the cryptocurrency market. A positive regulatory environment may promote confidence among market participants, thereby positively impacting Ethereum prices.

5. Investor sentiment and market expectations: Investors’ expectations of future market trends will also affect the price of Ethereum. Optimistic market expectations may attract more investment, pushing up prices.

In short, the subsequent trend of Ethereum's surge will be affected by a variety of factors, including technological progress, market demand, macroeconomic environment, regulatory policies, and investor sentiment. Investors should consider these factors comprehensively when making investment decisions.