My teacher often said that a Chisao master = Wing chun master

So what is a chisao master?
First of all, it's someone who can deal with anyone and still control their own temper. 
If you cannot control yourself, you cannot control anyone else. In chisao you learn to control your own actions in a way that gives you a way to deflect your opponent's defenses rather than forcing your way through.
This way enables a somewhat smaller person to defeat a bigger opponent.
Be humble, stop fighting and start just reacting and you'll improve so much faster.

So what is chisao then?
 Chisao is a drill that teaches you to defend and attack at the same time. It teaches you to avoid using power against power by using contact reflexes and it teaches you to chain your attacks to tear down your opponents defenses.

By learning how to use both hands together your handspeed will become incredibly fast.

Using drilled contact reflexes mean that you will further increase your speed because you don't have to "choose" a technique. Your body has already been programmed to react in the most efficient way.

Chained techniques increase your fighting power beyond your size by constantly keeping your opponent on the defense and defeating him without leaving him any chance to get back into the fight before it's over.

日本語今度書きます。英語の文章。Part 1
I often get asked questions about self-defense versus sports fighting (格闘技 in Japanese) so I decided to write down how I define self-defense, realistic fighting and sports fighting. I feel many people are confusing the different terms and end up not realizing what they are actually learning. I'm starting with a few thoughts on self-defense, with more to be added hopefully soon.

​Self-defense
What self-defense should be like: Teaching of the simplest and best techniques for dealing with the most common attacks and teaching of the mental preparation needed to handle the stress of such situations.
Self-defense should be taught as a limited course to quickly equip the person with the most basic skills to handle a situation and get away safely. Think of it as learning self-defense first aid: you learn just enough to deal with the most common attacks and get away.

What it often is taught like: Teaching of techniques to defend attacks that are not likely to happen, techniques and tricks that are of very little value out in the real world, and no mental preparation on how to deal with a real situation.

Real self-defense is more than just a technique. It's also about what happens before and after you get into a situation where defending yourself is needed.
Without mental tactics many people will just freeze when they come upon a dangerous situation. So what happens before is important.
Just applying a technique to free yourself might not be enough. What will the attacker do next if you stop there?
Sometimes simply running away isn't that easy. What if you are in an apartment, elevator, public toilet or a similar confined space? The techniques to free yourself are just a little part of self-defense curriculum.

I often get asked about self-defense and for example aikido or what do you think about Russian (Systema) or Indonesian (Silat) martials arts? And which is better, wing chun or Jeet Kune Do (JKD)?

The short answer to all of these is that Aikido is not very good self-defense. I'll write more about why not some other time. For now just trust me, choose Aikido for all other reasons than for self-defense.

I haven't seen or tried any Russian, Indonesian martial arts, kicking or grappling arts, that has much to offer to my goal which is:

to find the best, most simple and effective way to defend and fight for yourself under any circumstances, for any person no matter height and weight.
And it has to be speedy, enabling the practitioner to stop the opponent quickly
to avoid the need for lot's stamina training).

Furthermore, this simple method has to be able to deal with standup fighting, takedown attempts, attacks by multiple opponents and opponents armed with weapons. All of these attacks have to be able to be dealt with on any surface and both in a confined or in an open space. 

So considering my goal choosing between Wing Chun and JKD is easy.

Wing Chun is just much better for realistic fighting, whereas a lot of (Japanese) JKD seems to be for actors looking for fast and flashy looking but not necessarily effective techniques. 
(But all Japanese JKD might not be the same, like not all wing chun is the same. So you might be lucky to find a great JKD teacher, likewise when I write about wing chun, it's only about J's GYM wing chun.)

日本語版：https://www.jsgym.net/blog/self-defense-jeet-kune-do-aikido-goal

アダプタビリティと無限に連続している技
アダプタビリティ（適応性）は、ブルース・リー（JKDの作成者）が「水のようになる」と呼んだことです。ジェイスGYM詠春拳では、形（手技）を変えて相手の攻撃に対応しようとしていますが対戦相手に技を「選択」させます。 無限な技とは、技を沢山使っているという意味ではありません。逆に、少ない技を連続して、無限な攻撃と防御的な動きで戦うことです。 この戦い方は、ほとんどの武道（ジークンドー含めて）で使用されているパンチ/キックのコンビネーションとは大きく異なります。詠春拳の「無理しない」と「前へのプレッシャー」のコンセプトを使わないとできないです。

English: Adaptability (Wing chun) is what Bruce Lee (creator of JKD) called to "be like water". At J's gym wing chun we try to adapt our responses to the opponent's attack by changing shapes (read techniques) and let the opponent "choose" our techniques for us. Infinite techniques do not mean that we have a lot of techniques but that we connect a few techniques into an infinite chain of attacks and defensive moves. It's very different from a punch/kick combination as used by most martial arts. Blocking often works poorly against a stronger opponent and so we should only use it as a last resort. Instead, we focus on deflecting attacks and when possible to use the opponent's force against him.

A good teacher to me is someone like I imagine this friendly Ip Man to be. Someone who's strong and knowledgeable but friendly and approachable. My teacher is like that, I strive to teach in the same way.
I have personally always stayed away from arrogant, bossy, and violent teachers or teachers who needs titles like wing chun master or something similar to set a barrier between himself and the students.
They often use it to cover for their lack of skills!!

I played around with my new phone's camera after the evening class and shot some of the students doing free training. Since the fluorescent lights keep flickering it's not really useful for indoor shooting. But the quality seems fair.  Even though I zoomed in a bit on the video but it still looks kind of crisp. At least that is how it looked on the phone, less crisp when uploaded to the website.....
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Staying on and working on the techniques is a really good thing to do when you have time.
Great job,  guys!!!