Tongdaxin notes that if the increase is <3, return 1, otherwise return 0 means that if the increase is less than 3, return 1. If the increase is not less than 3, return 0.

Expansion and extension: Tongdaxin stock trading software is a securities information platform positioned to provide multi-functional services. It is a mobile securities software designed by Shenzhen Fortune Trend Technology Co., Ltd. Tongdaxin allows users to divide the screen freely and specify which content each piece corresponds to.

Software functions: 1. It integrates market conditions of Shanghai and Shenzhen, Hong Kong stocks, US stocks, futures, options, funds, macro and foreign exchange, and is suitable for all investors.

2. Innovate and combine Shanghai and Shenzhen data to launch special functions such as DDE decision-making, capital flows of individual stock sectors, theme events, unanimous expectations, shareholding changes, and dragon and tiger lists.

3. Provides market conditions for Shanghai, Shenzhen, Hong Kong and US stocks, and supports self-selection, ranking, sector and various technical indicators.

4. Overview of the global market through commodity futures, foreign currency exchange rates and global indices.