Today is my second day, 130 metres in the air, on the Gwangan Bridge in Busan, South Korea. This bridge is the symbol of Busan and I'm here with a simple message to the people of Busan: You are living in a danger zone.
The other thing I'm doing is continuing a long walk. The first steps of that long walk were taken 42 years ago when a group of people went out to sea to protest against nuclear tests.
And today, more than any other day, I am proud to be taking those steps with my fellow climbers up here, on the anniversary of the bombing of the first Rainbow Warrior.
Right now I am standing upon decades of history, I'm fighting for a world free of nuclear energy, just like the crew of the Rainbow Warrior did 28 years ago in the Pacific.
In my culture you don't ask questions. I don't think I'm that popular at the moment, but I'm not doing this for myself. 3.4 million people live in the danger zone of the Gori nuclear power plant. If Fukushima happened here, it would be a catastrophic nuclear disaster, maybe even worse than Chernobyl.
Speaking to Koreans about the dangers of nuclear energy is not easy. But challenging the nuclear industry has never been easy. And the threat of nukes is too important not to speak out.
Today I feel tired, but I feel strong. It's the right day to be camped on a cable 130m high asking the government to be strong, asking the government to protect us from the nuclear danger.
Today I am part of history, part of a legacy Greenpeace has been fighting for since the beginning.
Korea, now is the time to question. Sometimes it is just too important not to question.
Jun Kwon Song is an Activist for Greenpeace South Korea.