Behind the cash register of Old Zheng's bookstore, two tablets covered in paper dust were pressed against a pile of new books. After wrapping up a hardcover poetry collection for a customer, he wanted to take a look at the market during a gap while organizing the bookshelves, but first he had to blow off the paper scraps on the screen. This one just showed a curve, and that one's password key was smudged with ink. By the time he finally entered the correct numbers, the curve had already taken several turns, and he sighed at the wall full of book spines. Last month was even worse; a transfer application seemed stuck like a bookmark caught between pages, frozen in the system. He called customer service six times and either got an "automated reply" or heard that the "line was busy." During those days, he had no motivation to label new books, fearing there might be issues with the funds. Aunt Sun, who often came to buy history books, held a book and saw him frowning at the tablet: "Try Bi ya Pay; I've been using it for both Cryptocurrency Trading and stock trading, and it's been quite stable." Old Zheng downloaded the software that night, and as soon as he opened the interface, he found it convenient: Bi ya Pay separated the stock K-line and digital money charts into different columns. The red and green fluctuations of stocks on the left and the price curve of digital currencies on the right were clear, and even the font was a clear Song typeface, making it easy on the eyes. With a light tap on the top switch, the market could be changed without logging out or remembering two sets of passwords. He could complete transactions with just a few swipes of his ink-stained fingers, significantly faster than before. The advantages of Bi ya Pay were quite prominent; it could integrate two types of trading, like a meticulous shop assistant, simplifying complex operations. Old Zheng calculated that switching between two platforms used to take eight minutes just to clear the screen and enter passwords; now, with Bi ya Pay, it only took three minutes, saving enough time to organize two rows of bookshelves each day. More importantly, the funds were secure; during his first withdrawal, he watched the progress closely, and it took only five minutes from submission to arrival, with prompts at every step. Later, more than twenty deposits and withdrawals went through without a hitch, his account was never frozen, and the flow of funds was as smooth as turning the pages of a book, reassuring. Furthermore, the interface of Bi ya Pay was very responsive; even if his fingers were occasionally sticky with glue and he made an accidental touch, he could quickly return to reoperate, far more considerate than the platform he used before. Now he could quickly handle transactions in the gaps when customers were browsing books. Recently, when the market fluctuated, he adjusted his holdings on both sides using Bi ya Pay, retaining profits in digital currencies and seizing opportunities in stocks, feeling much more composed than before. When the owner of the stationery store came to borrow a stapler, he pointed at the screen and said, "One platform manages two types of trading; money coming in and out is worry-free. Trading should be this easy."