Dr. Mark Nan Tu

Geotagging, referring to the contents of digital items such as pictures being marked with geographic information. For example, a digital picture can be added with geographic information includes: longitude, latitude, Coordinated Universal Time (UTC), altitude, and even heading information. These information can be embedded in the photos

About a year ago, during the Beijing Olmypic, I set up a goal to practice tennis. I was planning to reach NTRP 4.0 in a year, which is Aug, 2009.
For the past year, I have practiced at least 3 days a week and gone for private lesssons and training camps.
I have improved dramatically in terms of groundstorkes consistancy and footwork. I am now a NTRP 3.5 player.
I am now setting up my goal to reach NTRP 4.0 in about another year.

Mark Tennis Groundstroke Practice Aug. 28, 2009 from Mark Tu on Vimeo.

Hello all:

I started a new blog: MetaGPS Development Blog which keeps track of the MetaGPS development process. MetaGPS is a geotagging unit for Nikon DSLR cameras. The final product will be released to market in the next month or so. For more detail of this product, please take a look at: www.MetaGPS.com

No one can.

I brought a fake Wilson K90 for $25USD in Shenzhen. The seller even throw in a Wilson bag which should worth $5 alone. I brought my first Wilson racket back in 1993 and it was a real Prostaff classical 85. (the one used by tennis legend Pete Sampras). I only hit with it a few times before I went to the US and basically retired from the sports. I started playing tennis again in Aug. 2008. I brought a Wilson K95. I know both my Prostaff and K95 are the real racket as they all cost me around 190USD.
So now, I have three rackets, a real Prostaff, a real K95 and a fake K90.

I have played with fake k90 for a while. Here is what I found:
1: It is impossible to tell the difference from the appearance. The graphics are excellent, identical as the real K90.
2: It weights only 260 gram (real K90 weights around 320gram for the Asian edition).
3: It uses graphite material but is different than the real K90.

Surprisingly, this racket is very playable. It actually feels like a classical (80s) racket. I think that the racket uses a classical graphite material, similar to those 80s racket.

I personally believe that the racket is well worth the $25 USD I paid for. I even use it in real matches.

If I can demo it, I would buy the racket for $50 even it says: Milson or whatever on it. I started with Wilson as the sellers in those sports stores kept pushing Wilson to me (perhaps with high margin for themselves).

If a real Wilson is make in China, I am very confident that the same factory can make Milson with the same quality if not better. These factories do not use their own names as they do not have the marketing budget to build a brand name as they are busy making the 5% margin to do OEM for Wilson. Everyone got to live. I guess.

However, I expect the situation to change in the next 10-15 years. In the next 10 years, I will not care if my racket is a Wilson or a Milson. It will a good thing for all the consumers as the Wilson and Milson will all sell for $50-$100.

I played some tennis in my university years (without a coach). I also played a lot of basketball and was in the university swimming team. So I had a good athletic foundation. But I stopped playing tennis after graduation which was 17 years ago. I do excise 3-4 times a week through out the years just to keep in shape. Now, I wanted to pick up tennis again.

I recently went through a 3 week training camp just to get back on my tennis game. It was 2 hours each day and 5 days a week. After the training camp, I

I made a reservation for the exhibition in the Capital Museum a week ago. The reserved ticket is free but it does not cover the main exhibition: The Chinese Memory. Treasures of the 5000-year Civilization. This exhibition is 30RMB. It is well worth the price as the artifacts displayed are all the national treasures brought in from provincial museums all over China. It takes about 1.5 hours to exam the treasures.

How to get there: No. 1 subway line, exit in Muxidi exit southeast. Walk 200 meters.

The Chinese Memory. Treasures of the 5000-year Civilization

National Centre for Performing Arts

I went to watch a show in this egg-shaped building which cost 2.2billion RMB. Each seat costs 500,000RMB. Wow, a very impressive building, on par or more impressive than say Sydney Opera House.

The best way to get there is by No. 1 subway at the Tiananmen west station and at exit C.

National Centre for Performing Arts

After a whole day of raining, the sky finally cleared up. Being in Beijing for more than 4 years now, I can swear this is one of the clearest days in Beijing. The sky is deep blue with clouds hang in the distance. I was later told that the visibility is 35 kilo meters (instead of the usual 500 meter).

I went to the 798 art district. Because of the Olympics, the 798 had a face lift. The streets are decorated with flowers. The motorized vehicles are not allowed in the district. There are lots of visitors and many photos enthusiastic.

The pictures are taken with the color set to: vivid in the Nikon D300. I love the colors.

The entrance to the 751 D-Park

The boilers from the 60s

Nike’s showroom

This should be a Changjiang 750 (modeled from a second world war BMW)

The 798 Art District is still under contruction

Model shoots

Huge ads in the Wangfujing shopping district

People watching the opening ceremony on big screen in Wangfujing

The flowers in Tiananmen square

Visitors carry national flags in Tiananmen square

The timer goes to zero at the National Musmum