Problem Statement Researches have been carried out that if you are not a paid user of Baiduyun and downloading a file which is shared also by a non-paid user, then by no question the download speed will be capped. Third-party software like Pandownload which claimed to crack such limitation were…

# Benny

## Say Goodbye to Baiduyun Client And Its Slow Speed

Updates: Article updated on May 3, 2018 for substitution of new currently applicable plugins. Introduction Internet - almost the most important mass media in our everyday life - is becoming more and more indispensable for message delivery, phone-call connection, news, weathers, campaigns and merchandise notification or enterprise affair arrangement, public…

## ‘Let's Encrypt’ SSL Renewal for Nginx by ‘certbot’ cmd with Webroot Plugin

Problem Statement Today I found my whole site is down for several hours due to the expiration of the ssl (Secure Sockets Layer) certificate issued by Let's Encrypt and thanks to the DNS (Domain Name System) and CDN (Content Delivery Network) service and more importantly, the Always Online™ function provided…

## Control of An iOS Device with Mouse and Keyboard on A Computer

Introduction Nowadays, thanks to VNC, it is already a mature solution using your smart device (i.e. a phone or a pad) for the local control of a computer with both connected to the same LAN, or remotely if to the internet. However this article is going to tackle the…

## An Ultimate Chinese High-School Maths Problem

Question Solve \[\sqrt[3]{a+\frac{a+1}{3}\cdot \sqrt{\frac{8a-1}{3}}}+\sqrt[3]{a-\frac{a+1}{3}\cdot \sqrt{\frac{8a-1}{3}}}\] Solution: From the question, we regulate \[\begin{align*} \frac{8a-1}{3}&\geq 0\ a&\geq \frac{1}{8} \end{align*}\] Let \[\xi…

## An Interesting High-School Maths Problem

Question Given \[f\left ( x \right )-\frac{1}{3}f\left ( \frac{x}{3} \right )=x,\] find \(f\left ( x \right )\). Alternative solution: We derive the following equations, \[f\left ( x \right )-\frac{1}{3}f\left ( \frac{x}{3} \right )=x\] \[\frac{1}{3^{1}}f\left…