Điều gì tạo ra ánh sáng xanh?

• 00:10
• 00:43
• 01:15
• 01:48
• 02:20
• 02:52
• 03:25
• 03:57
• 04:30
• 05:02
• 05:34
• 06:07
• 06:39
• 07:12
• 07:44
• 08:16

it lights blue ............. Whammer Jammer he he (Do u remember Rambo II :))