The phrase "za りゅう の は どう" corresponds to the Japanese [ざ りゅう の は どう](javascript:void(0)). Breaking it down:

• りゅう (竜) means "dragon" in Japanese.
• の is a possessive particle, similar to "of" or "'s" in English.
• は is a topic particle, often used to mark the topic of a sentence.
• どう means "how" or "what about".

However, "りゅうのはどう" (竜の波動) specifically refers to a "Dragon Pulse," a special attack move in the Pokémon games where a dragon releases a pulse of energy to attack opponents. This move is known for its power and is commonly learned by dragon-type Pokémon. So, "ざ りゅう の は どう" (ザ りゅうのはどう) can be understood as "The Dragon Pulse" (ザ is the katakana for the English article "The"), referring to this specific Pokémon attack move. In summary, this phrase relates to the move called "Dragon Pulse" in the Pokémon series, describing a powerful dragon-type special attack that unleashes a shockwave at the opponent.