数电发票有难题，一键“小慧”来帮您

Group 1 - The article introduces the concept of digital electronic invoices (referred to as "数电发票"), which have the same legal validity as paper invoices but do not exist in physical form and do not require a medium for support [4][6]. - 数电发票 integrates various types of invoices into a single electronic invoice type through digitalization, allowing for nationwide uniform coding and automatic data collection via a tax digital account [4][6]. - The article highlights the use of an intelligent voice consultation service named "小慧" to assist users with inquiries related to 数电发票, making the invoicing process simpler and more efficient [6]. Group 2 - The intelligent consultation service "小慧" is designed to alleviate tax-related concerns and enhance user experience with 数电发票 [6]. - Users can access the service by calling a designated number and following voice prompts to receive assistance on various issues related to 数电发票 [4][6].