# I arrived in Hangzhou yesterday

I arrived in Hangzhou yesterday, and I could feel that the amounts of dopamine released in my brain fluctuated from time to time. At first I felt really happy, I was not sure why. Then I felt sort of

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I arrived in Hangzhou yesterday

I arrived in Hangzhou yesterday, and I could feel that the amounts of dopamine released in my brain fluctuated from time to time. At first I felt really happy, I was not sure why. Then I felt sort of

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change openwrt source to UTSC

The following steps only apply to Netgear 4300 and openwrt 15.05.1. Modify /etc/opkg.conf to the following lines. 1234567891011dest root /dest ram /tmplists_dir ext /var/opkg-listsoption overlay_root

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Install fcitx on ubuntu 16.10

Run the following command. 1sudo apt-get install fcitx fcitx-table fcitx-googlepinyin fcitx-module-cloudpinyin Search for language support, and check Keyboard input method system is fcitx Reboot. Go t

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Auto Adjust Brightness On Ubuntu 16.10 Using Systemd

This works on ubuntu 16.10 Create a file brightness.service in /lib/systemd/system with the following contents(Change 100 to whatever brightness you want, roughly it’s between 0 ~ 1000). 12345678[Unit

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Super CapsLock On Ubuntu 16.10

On ubuntu 16.10, make CapsLock act as Esc when it is hit, and as Ctrl when it is held. To make it work, modify /etc/default/keyboard, change 1XKBOPTIONS="" to 1XKBOPTIONS="caps:ctrl_modifier" Then add

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Start Shadowsocks Automatically On Ubuntu 16.10 Using Systemd

Install shadowsocks globally(You have to add sudo here) 1sudo pip install shadowsocks Create a new file called shadowsocks@.service in /lib/systemd/system 1234567891011[Unit]Description=Shadowsocks Cl

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beautify i3wm

MotivationI enjoy using i3wm, big time. You can switch to different windows/apps conveniently with it. The only problem to me is that it’s not beautiful enough, and it’s ridiculously small in my high-

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The empty set is the subset of any set

The empty set is the subset of any set. This is true. Some people take it as a convention, but in fact, it can be explained. According to the definition of $\subset$, $\varnothing\subset A\Leftrighta

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Understand poisson distribution

IntroductionPoisson distribution can be derived from Binomial distribution when $\lim\limits_{n\to\infty}np = \lambda(\lambda\in\mathbb R)$, in which $n$ is the number of trials, $p$ is the probabilit

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Proof of $$\lim_{x\rightarrow \infty} f(x)^{g(x)} = c^d$$

Theorem: $$c, d\in {\bf R}, \lim_{x\rightarrow \infty} f(x)=c>0, \lim_{x\rightarrow \infty} g(x) =d>0$$ then $$\lim_{x\rightarrow \infty} f(x)^{g(x)} = c^d$$ Proof: Because $y(x)=ln(x)$ is c